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Why isn't there an ad blocker which still generates revenue for websites?
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Advertisers don't keep spending money on ads if they don't have an effect. This will be good news, until 2 possible outcomes: * The site you're visiting doesn't make any money and needs to close because it doesn't cover its expenses.* advertisers figure out an other way to serve ads that bypass adblocks", 'What about an adblocker that still blocks ads but instead mines some cryptocurrency for the website?', "Few advertisers pay to show the ad, most pay for clicks. If you hide the ads, nobody clicks them. nobody gets paid. if you have the blocker fake click them to generate money for the website, the website no longer needs visitors to make money, they can run a bunch of computers that click the ads on the site.this exists, but is fraud. ad networks realize those clicks aren't real and pay no money for them.Much like commercials, only it took us longer to solve for them, advertising needs to move into the realm of embedded within the content. Product placements', "I would say a potential solution would be a paid subscription to an adblocker, think of it like a browser version of YouTube red. Logistics might be challenging but after about 3 seconds of thought I came up with the internet sites willing to accommodate the adblocker get a certain amount of money everytime their ad gets blocked which is paid by the adblocker company, which in turn is paid by the consumer. I'm thinking $11.99 a month? Throw in the first month for free?
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How do escalators maintain the same speed regardless of how many people are on them?
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The real question is, why aren't escalators faster?", 'It is using an Alternating Current motor that runs at a constant speed, the speed is directly related to the frequency of the AC power, 60 Hertz in North America. The motor is sized with enough torque for full load. Running it at no-load it will run at the same sped as full design load, just drawing much less current from the source. Kind of like pedaling a bicycle in a low gear on flat ground, really easy to push the pedals. As load increases the speed will remain the same but the motor will draw more current, like pedaling up a hill. If the load exceeds full design load and the motor should trip the Overload Protection device. like a hill too steep to pedal up, you slow down and stop. The motor should trip the O.L. long before it gets to the point of slowing down. Not exactly for a 5 year old I think.The escalator is designed such that it has enough power to carry way more people than can possibly fit on it without slowing down. Therefor, the question is really, why doesn't it speed up when less people are on it? It is because the motor and gears can spin only at one speed. So when less people are on, it just does so without using as much electricity.Heavy-duty synchronous motors. They run at a constant speed, but draw more power as the load increases. The older ones? Those escalators probably used governators. Seriously. A "governor" is a mechanical device intended to adjust the speed of a motor that it is constant._URL_0_ I'm a more visual learner, and just happened to watch this yesterday. You can view the type of chain system that drives the entire stair carousel.
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How were pigeons taught to deliver messages to people in the midievil times and how effective were they actually?
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Fiction has exaggerated this quite a lot. Homing pigeons are very good at getting back home, but that's about it. So you keep them somewhere where they're well fed and cared for, then you take them with you. Need to send a message, release one with it and it'll fly home again.They were not taught. The pigeons know where their nest is and how to get home. They are then carried from that location to a different one in a cage and when released they fly home. About the only "training" that occurred was being careful to not keep them long enough that the second location becomes considered home.
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When giving mouth-to-mouth, how does the other person receive oxygen instead of CO2?
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You only use a little bit of the O2 you breathe in. Normal air is 350ppm CO2. 8% is dangerously high. Human exhaust is 4%. Sure, that's 100x more than normal air, but not a dangerous amount.
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how do skiers survive such high drops without dying or severely injuring them selves?
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EDIT: I misread the post, ignore me. There is a point when something falling through the air where it stops increasing in speed. It's called terminal velocity. Terminal velocity is dependent on many things but largely on the surface area and porousness of the material. So increasing your surface area with a parachute decreases your terminal velocity allowing you to land safely on the ground.You can think of trying to pull a parachute through the water. All the water is filling up the chute and it makes it difficult to pull. Air is a gas and less dense but a similar idea applies.Math stuff: The force pulling you to earth is constant. Leading to an acceleration. You have a force acting in the opposite direction that is a function of velocity . Once the force has increased on the parachute to match gravity, your velocity stays constant.
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What makes something "biodegradable"? What are the conditions necessary for something to biodegrade?
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There is often a little confusion over what biodegradable actually means in terms of plastics. Biodegradable means that a plastic will degrade into smaller pieces of plastic, down to microscopic level, never actually going away eat it? Then it's biodegradable. If not, you rely on chemical reactions.Conditions for biodegredation: the same for bacteria. Warm, wet, exposure to air=decompose faster
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What is that fizzing sound in the back of my neck when I'm super hungry?
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I dont know but it happens to me too, and was made fun of when I commented it to my family.It's like a fizzy feeling going from my stomach in the front through the shoulders and meeting in the back of my neck", 'Is it like having pop rocks in the back of your throat?
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Why is it that when putting somebody on speaker phone when calling them, the microphone doesn't pick up their voice - resulting in them hearing themselves talk?
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This actually does happen whenever my partner calls me from her car. I'll say something and then about a second later my awful voice will come back through my phone and completely distract me from what I was saying. Drives me bonkers.
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Apart from the obvious fact that gold is given value by everyone and THEREFORE has intrinsic value, what exactly is the big deal about Gold?
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- The symbol of gold is Au, from the greek word aurum, which means glow of sunshine. The english word gold comes from the words gulb and ghel referring also to the color. It is the only metal of this color. - Gold has unique physical chemical characteristics that made it very valuable. Gold is the most maleable and ductile of all the metals. One ounce of gold can be drawn into more than 80 Km of thin gold wire. One ounce of gold can be beaten into a sheet covering 9 square meters - it is very efficient for the transmission of heat and electricity. Gold has the highest corrosion resistance of all the metals and it is corroded only by a mixture of nitric and hydrocloric acid - gold is rather scarce. It is estimated that the whole gold of the planet equals a total of 168,180 tonnes or 5,407,112,558 ounces. To visualize this volume, let's imagine a single solid gold cube with edges of about 19 meters. This is about three meters shorter than the length of a tennis court. - I prospect for gold as a hobby and can assure you I will never get rich. I can spend a week and find only a few spec or at times get lucky and find a small nugget. If you want to make a living off of it, you will need millions to get heavy equipment, battle the elements and that is of course you can find a claim to mine.
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Before the widespread distribution of clocks/watches amongst the working population, how did people get to work on time?
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Many buildings had clocks on them. It's something that looks good on your storefront, and it's a small service to your community. Banks were particularly common, and almost all train stations had a large clock visible from out front. Bells signaling time were also common, like Big Ben.People usually worked where they lived so wake up and work was normal. Also the 8 hour schedule is less than 150 years old Before that people worked and braked when ever if their job was not taking else the worked till closingIn rural areas, rooster crows woke people up, at dawn, and you went to sleep when it got dark. You get used to that so that pretty soon you dont need the rooster to wake up at the right time. They would wake up, do the chores around the farm, then go to the shop for their job. & #x200B; In urban areas you would have a guy come knock on your window.I can't remember where I heard it, but apparently some people used to drink a load of water before going to bed, so they would wake up needing to pee.
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Why do some states require you to reveal your identity when you win the lottery?
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how effective would it be for the winner to legally change their name after they've been publicly revealed as the winner. Or does a name change leave a public paper trail that would make it useless for this?", 'It’s more that they want the promotion - those photos of ordinary people beaming with big checks in hand. It’s outrageous because it brings out fraudsters and worse. In Florida we have had at least one winner murdered.One of the most stunning displays of how broad the gangster Whitey Bulger and his Winter Hill Gang's influence was in Boston was that he turned in a $14.3M Massachusetts lottery ticket in 1991. It wasn't rigged by any account revealed by the ensuing investigation. From all appearances, he just was so thoroughly networked that he put the word out that he'd pay better than the Massachusetts lottery commission, perhaps with the caveat that anyone who did win the lotto over whom he had any influence could expect excruciating things to happen to them and their family if they didn't submit the ticket to him. In any case, he forced the Commonwealth of Massachusetts to launder $14.3M for him. Needless to say, the FBI was fucking *pissed.* Especially egregious was the fact that his brother Billy was at the time 13 years into his 18 year tenure as the presiding President of the Massachusetts State legislature. Despite the fact that investigators couldn't identify any mechanism for lottery fraud, the implications of that level of corruption is why lottery winners are public information.Because the state wants to use winners to advertise the lottery. They sell more tickets when there's a face attached. They use the "to prove there's no fraud" line as an excuse, but that's all it is.
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How does a railgun work and why are there no flames while the projectile is in the air and then lots of flames and sparks on impact?
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a rail gun accelerates it's projectile using electromagnetic force rather than controlled explosions like a tradition gun or rocket, hence no flames. the sparks on impact are due the energy of the collision.
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The 'Rail-Gun' and why it's such a big deal?
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As to why it's such a big deal Ship ammo is an extremely dangerous thing. If a ship is hit and the magazine is reached, then a very possible result is the entire ship exploding. One hole in the wrong place, and the whole ship goes [kablooey]. You can't armor a ship enough these days to survive hits, so carrying a crapload of explosives around is a very big problem. A railgun would allow to launch solid chunks of metal. This is both more efficient , and much safer for the ship since now it can get hit without exploding.A rail gun uses electromagnetism to accelerate a piece of metal to extremely high speeds. It can make that chunk of metal go much, much faster than any gunpowder-propelled projectile, which means it can shoot farther and potentially do more damage.
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Why does it take so much speed to go into outer space? Could we just build a elevator out of steel cables and pull ourselves to space?
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People have been talking about space elevators for a while, but it's likely impossible to build one given the tremendous amount of resources necessary, the weight, and the structural stability of it. Not only that, but it would be very impractical because you'd have to build an incredibly tall structure to begin with. Leaving Earth requires so much speed because the spacecraft needs to escape the pull of Earth's gravity. If an object gets thrown up in to the air without enough velocity, it will just fall right back down. That said, a high speed needs to be maintained at so that it does not slow down to a point where gravity wins, and thus falls back down to the ground.The issue isnt just *getting* into space as much as it is *staying in space*. If you hypothetically had an elevator that let you off at low earth orbit and jumped off that platform, you would just fall straight down and re-enter the atmosphere. To stay in orbit, you need *a lot* of orbital velocity . This is why rockets start curving towards the horizon after getting through the lower atmosphere .Well, as I'm sure you know, the Earth is always spinning. Pulling ourselves into space wouldn't be an option either. We would have to anchor to a moon sized object that orbited the Earth at the same speed as the Earth's rotation. Not really feasible. Objects within the atmosphere want to follow the curvature of the Earth. So, to break through that takes a hell of a lot of thrust. It's the same reason a plane can go from NY to Hong Kong in a relatively straight line and not launch into space.
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How does a liquid gel tablet of pain reliever work in your system?
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> Additionally the idea is that you can OD on an over the counter pain reliever like Advil. You can, but part of the reason why they are safe to sell over the counter is that you would need to take ridiculous amounts of it to overdose, on the scale of downing an entire pack in a day. Plus 'overdose' when it comes to painkillers like Ibruprofen or Paracetomol is less of an immediate danger like is typically associated with a drug overdose and more just 'you wrecked your liver'.
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Why people can feel metallic taste of stainless spoons during sickness, but can't when they're healthy?
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What do you mean can't when they're healthy? You can taste it, but just licking it usually doesn't work. Keep it in your mouth for a bit.
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What is chemotherapy and how does it work? Why does it work?
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As others have said, they are poisons, but they are poisons that work in different ways. I had 4 years of chemo for acute lymphoblastic leukemia and my chemo drugs did specific things. Asparaginase - takes away an amino acid cancer cells need to grow to kill them. It can just kill a person nearly instantly each time it's used. But otherwise it really didn't have side-effects that bugged me Vincristine - stops cells from dividing, cancer cells really like to divide a lot, can have nasty side effects, I got some arthritis from it Mercaptopurine - stops DNA replication, totally a poison Methotrexate - it retards cell division and has a bunch of nasty side effects, it really is a poison Prednisolone - a steroid to reduce some of the effects of the other drugs - meaning they give it to you to reduce the effects of the other ones as they poison you
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; it’s not the volts that kill you, it’s the amps?
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It's a little bit bullshit. It's very similar to saying that it's not the fall that kills you but the ground. Voltage is potential, same as height. Without a lot of it, you can't drive enough current to be dangerous in a human body. Also the voltage and current relationship is linear. So given some constant resistance through your heart, it's the volts that drive exactly the amps that kill you
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How do we know we haven't found a groundbreaking cure for a disease yet, and that it simply doesn't work on mice?
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I think there is a massive misconception that studying animals with a low match to humans couldn't reveal useful medical information. All the simple medical solutions have been discovered. Medical and biological research today are focusing on the very fine details. In many organisms we are now studying the effect of one gene at a time. In many cases we have the exact same gene in humans, and so having access to a rodent for these studies is vital to get a grasp on all the functions a single gene could have. The days of trying out a 100 medications on a rodent to test for success is fading into the past. A single PhD student could do research on around 10000 rats to explore the function of a single gene, with lower cost than any other method. When ever it is possible, researchers will go to an even more simple organism. This allows them to reduce the number of variables that can affect the study. And quite often allows them to do more research in shorter time frame, due to the general shorter life cycle of these organisms. Once they have enough information they can scale up the research to a more complex organism to test for any additional information. This is tough work, with hours spent sleeping in the lab while experiments are being conducted. Waking up every 15 minutes for 72 hours to take readings, etc. And no, there are no mattresses or bunks. Some references that can paint an even better picture:_URL_0_ _URL_1_", 'I like this question. How come so few comments? Enlighten me lads! This is interesting as hell
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Why do triangles help to strengthen structures?
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Short answer: Math! Not quite ELI5 answer: A triangle has sides and angles, and if the three sides are certain lengths then they must be at certain angles. Four sided objects can have the certain lengths at many different angles So if you take three pieces of wood, nail the corners together to make a triangle, then they will stay rigid as that one specific triangle. If you use four pieces of wood, then you can push the square/rectangle/whatever over into other shapes and angles and it will likely break at the corners or pull the nails out. ELI5 visualization: Get toothpicks and marshmallows, or pencils and tape, or some other easy building materials. Make a triangle and make a square. You'll be able to see how the square is able to deform, but the triangle will hold its shape even though it is made from flimsy materials.
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why do women's pants all have stupid little pockets?
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Wallets are for men and purses are for women. Some traditional bs. Wallets goes inside pockets, so men needs pockets. Purses don't go inside pockets, so women don't need pockets. So, they make fake pockets or small pockets for women forcing women to buy purses too. The companies who sell clothes see how much money they can make, not how useful their clothes are.
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Why do human diets consist of mostly food we have to cook or run the risk of getting sick, while animals are completely fine eating food raw.
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Most animals aren't completely fine eating raw food: They just don't have a choice. Game has to be cooked very thoroughly because game meat often has parasites.This question pops up about once a month: those animals aren’t as healthy as they seem. They just can’t vocalize their despair', "There have been a lot of good answers, but there is also another factor: evolutionarily speaking, we have only started eating meat fairly recently - bones found with tool marks place the first known instances at about about 3 million years ago. Obviously, by this point, we were already tool users and we were also likely cooking meat from pretty much the beginning. As we have not always been natural carnivores, we haven't developed the usual carnivore defence mechanisms against bacteria in foods. Let's take a dog for comparison, who are also opportunistic omnivores but can happily eat a bone buried for a couple of weeks. First, their stomach is a lot more acidic than ours - it can be as low as 1.08 pH compared to humans which is more like 2-3 . Food also spends longer there, as long as 12 hours, compared to humans at 6-8. These two factors help to kill more bacteria before it makes it into the intestines. It also is part of what lets dogs directly digest bone fragments, too. Secondly, food spends a lot less time in their intestines, where a bacterial infection could take hold. In fact, while their small intestine is comparable to ours, their large intestine is only a foot long where ours is 5 feet long. This means that if bad bacteria got into their gut it has a lot less time multiply and cause issues. The downside is they can't digest a lot of plant matter that humans can.
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How your DNA can be used to determine where your ancestors were from?
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Human DNA consists of 2.9 billion base pairs , 99% of which we share with everybody else. That remaining 1% within which we differ from one another is still a whole 290 million base pairs . In 290 million base pairs, there's a lot of room to find commonalities between people of the same race, region, etc.
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What is special about this video camera that can record 10 trillion frames per second, enough to see light traveling? Why don’t all video cameras record infinite frames per second?
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There's not much light arriving on your camera during a 1/10000000000000000 of a second. IIRC your eye gets something like a 0.1 quadrillion photons per second in normal indoor light conditions. A camera with a large lens could gather a hundred times more light, so when doing 10 quadrillion frames per second it would get one photon per frame. On average - some frames would have two, and some would have zero. You can't make a *picture* from a single photon - you'd need to get a bunch of photons on every single pixel of your image sensor. So it's not even a matter of building a better camera with future tech, there's simply not enough information arriving at your lens to record 10 quadrillion high resolution frames per second in normal conditions - at such experiments they tend to use extremely powerful light sources so that there's enough light for each image frame.
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How can Japanese and Chinese keyboards work?
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Rhode" you then choose the correct word.The japanese alphabets don't consist of letters, rather it's syllables. So the keyboards look like english keyboards, you can even install japanese language on your computer now and type in japanese just like they do. For example ke becomes け, which can then be combined with other syllables to form kanji. じかん becomes 時間 etc.They have the same appearance as English keyboards, but when the user types in a word, it becomes the character form. If there is more than 1 character form, a list of potential options is shown and the user has to select the one they want.
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How do airplanes manage flying upside down? Can majority of aircrafts do this?
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The special shape of a wing helps create the lift, but is not essential. It is easier for the air to flow over that special, offset-teardrop shape, so the performance is better right-side-up. But even if you flip the wing upside down, things basically still work. Lift will be reduced, yes; the airflow will break away from the surface and the wing will 'stall' sooner; you will need to point the wing further upwards than you normally would - but you could still make the plane fly.
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How to power supply splitters actually work?
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Voltage is like water pressure. Imagine you have a garden hose filled with water, connected to a faucet. You seal up the end of the hose and turn the faucet on. Not much water will come out of the faucet, but the whole hose gets pressurized to the pressure provided by your water system. If you make a small pinhole in the hose, water will squirt out. If you make multiple holes, water will squirt out of each of them. If you make a Y adapter, the same thing happens, even if you make multiple holes on different sides of the Y. The basic physics of water pressure doesn't change, regardless of whether the hose is shaped like a straight line or a Y. The reason I use small pinholes in the example is because usually electronics are designed so they don't consume enough to drop the voltage. You could equivalently pretend your water system had a very big tank, or a very powerful pump, that prevents the pressure from dropping even if large amounts of water are consumed. But I thought it would be easier to visualize an ordinary water system with a pinhole, than a powerful water system with a fully open hose.
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Why do drinking fountains have two separate jets of water that combine to form one arc?
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Where on earth are those type of drinking fountains common enough for the OP to phrase the question as if that's the norm? All my life I haven't seen any such drinking fountain until seeing the 500$ picture someone posted in this thread.
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Why the crypto market is not recovering.
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people don't think the price will go up, so they don't want it. you can search around for greater and greater explanations but this is basically it.
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If 52*7 is 364 where do we get our extra day to make a 365 day calendar year?
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52 is just a rough enough guide to how many days there are in a year but if you add the days of each month, you'll get 365.
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do animals have concepts of "pranks" or jokes within their natural social circles?
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Well, there is [this video]. One could probably argue that this behavior somehow wasn't about mockery, but I really would like to hear that explanation.
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Why pregnant women have their taste messed up to the point they eat weird combos and odor of certain food make them sick.
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It doesn't quite work like that for everyone. I haven't had any weird cravings - fried junk food in the first trimester, and cake in the third. I think I just really wanted salt and fat and now I want sugar and fat. I can't eat spicy food anymore because of the acid-reflux. Other than that, no change.
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How do some companies have authority to sell and manage internet domains when the internet isn't owned by anyone?
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As mentioned by others part of the business model is to be a middleman. However most also host the website. They provide space on a server for the website interface, instead of you hosting it on your own machine. This means you don't have to do backups, maintenance, and other hardware work yourself. They also offered help with basic website setup and design.They are granted the right to do so by ICANN, the organization that oversees the internet. They pay a percentage of the money collected to ICANN and have to follow specific protocols in how they manage top level domains.
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Why do migraines happen, what causes a visual Aura and why is the brain hurting itself?
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Unfortunately, we aren't sure. Science hasn't been able to figure out exactly what causes migraines.
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Why not just eject airplane black boxes before impact?
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The purpose of the black box is to record ALL of the flight and electronics data so that in the event of a crash, they can determine what went wrong and potential fix it so that it doesn't happen again. If something were to happen in those last 100 ft, it would not be recorded. Aerial mishaps rarely have eye witnesses. The investigators have to work backwards from the crash to figure how things went wrong. If they're are missing the last minute or so of data, it's a huge crutch they'd have to overcome. Making the black box easier to find is pointless if they can't use the data inside.The black box records data to help learn why the crash happened and to help prevent future crashes. Data about the impact itself can be important, so ejecting the box before impact is not a good ideaDon't recall who, but I heard a comedian once say "If a black box can survive crashes and fires and seawater why don't they just make the whole plane out of that material?"The data recorded on impact itself can help in recreating the crash and understanding how/why it happened, as well as its location and position in the debris field.
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Why do not airline have parachutes for everyone when the plane is about to crash?
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If your plane crashes at take off or landing then you don't need parachutes, they won't help If your plane suffers a double engine failure at altitude your survival odds are better staying in the plane as it can glide quite far If your plane suffers a catastrophic depressurization at altitude, you won't be able to put on parachutes because there are bits of plane everywhere and you've passed out from a lack of air In general, commercial airliners are exceptionally safe, passengers are idiots, and if the plane is going down your fate has already been determined you just don't know it yet. The additional weight on every single flight so that one plane might have survivors every 2 years isn't worth it. If you think air travel should be made safer you don't want to look at the statistics for car travel
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What are you actually doing when you take the derivative of a function and why does it give the area? What about integration?
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Derivative function gives the change of the function as it travels a very small distance. For example, consider the function y=x. Its derivative is 1. Meaning that if x changes from 1 to 2, y also changes from 1 to 2, i.e., by 1. Also, if x changes from 2 to 3, y changes from 2 to 3 by 1. This is because derivative of y does not depend on x value. This fact is represented by the derivative function. If the derivative function is dependent on x as in the case of y=x^2. Then, its derivative is 2x. Meaning when x changes from 1 to 2 change in y is 3. And if x changes from 2 to 3, change in y is 5.Only derivative is a function meaning you can actually compute for any range of x and instant value of x. Integration is reverse of differentiation. It combines the effects of y for an interval of x. It is similar to addition. Thus, integration gives the area under a curve. Chap 6 of Roger Penrose's The Road to Reality gives a nice intuitive explanation for both the operations.
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How are Open World Games like Red Dead Redemption 2 made in such detail?
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The way large open world games operate for the world around you is a thing called draw distance. Imagine a bubble around your character. As you run towards a mountain a LARGE item it would come as hazy a little blurry, what you would be running towards is almost a flat image of the mountain as you are running things like large trees or medium sized items would start appearing the closer you'd get the more detail would appear. to the small items like pebbles and rocks . & #x200B; If you are more looking into HOW it's made, games are usually planned out and drawn on maps, and while some of the previous posts have mentioned asset creations, the people who design and draw the trees, rocks and horse testicles, create the items and put it into a cache from there designers would take those toys and set them on the map, specific things are planned our, like the railroad goes there, villager X goes there. but generally programmers would create a paint brush like ability to smear on the map that will lay the trees and rocks down into paths, for it to be looked at and tweaked to provide an over all nicer experience. adjust the trees so no two look exactly alike. & #x200B; Now I've never worked with rock star, and my knowledge is a little limited but that's my understanding and I hope it's good enough for ELI5", 'Wasnt it like 8 years in development ? So, i would say, with a lot of time.
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why do obviously guilty criminals plead not guilty (i.e. Pittsburgh synagogue shooter)?
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Some really good answers, but put shortly it's because the defendant gains almost nothing by pleading guilty upfront. The prosecutor may offer a deal for any number of reasons, and pleading not guilty gives you the ability to negotiate
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Why are there so many different types of Police?
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FBI deals with federal crimes - in the US some crimes are federal and the rest are state crimes. Murder is a state, not federal crime. Kidnapping is federal, if one crosses a state line while committing a crime, it's federal. It's a complex system because each state in the US has it's own government, own constitution and handles everything that isn't expressly federal. So if I go out and kill someone, the FBI isn't going to be involved. If I kidnap someone, drive across a state line and kill them, the FBI will have the first right of arrest and a Federal Court will try me for kidnapping with intent to murder, then the state where I killed the person has a the chance to try me for murder and I'll have two trials.
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The U.S. and Canada are about the same size, so why is the population of Canada only ~30 million while the U.S. has a population of ~300 million?
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Almost all of US land is suitable for settlement, with a climate supporting local agriculture. A significant portion of Canadian land is not suitable for agriculture, so there's fewer people living there. Almost all Canadians live in the far southern part of the country, where the climate is more hospitable.
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Why are watches worn on the non-dominant hand?
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This is a carryover from the days when watches were wound by hand. You would have to turn the crown on the watch to wind the spring. Sure you could take it off if worn on your non-dominant hand, but it was much more convenient to wind it while still wearing it, and it's much easier to do the winding action with the dominant hand, so it would be worn on the non-dominant. Just to be clear, I completely made that up. And to give you a look behind the scenes, I started writing something out as a joke, and then thought that there could be some truth to the winding convenience and reasoned my way through a balderdash explanation. Here is my original thought: > This is a carryover from the days when automatic watches gained popularity. These are the mechanically-wound watches that used an oscillating weight to wind the mainspring in watches. The earliest watches did not have a way to limit or regulate the maximum tension, so overwinding was a problem that could lead to a watch running fast, or breaking. The dominant hand is typically used for masturbating, so watches would have to be removed to avoid the risk of over-winding or breaking the mainspring. For convenience, people just moved the watch to the non-dominant hand.
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How did leaders in the past give speeches to 1000's of people without a microphone?
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Everybody is also forgetting simple megaphones. ", 'Relating what a history teacher told me They don’t. The people in the front can somewhat hear the speech, but other people can’t. Most of the time the ideas are conveyed through body language, motion and tone of voice. The example they provided was MLKs I have a dream speech. Most people couldn’t hear his speech, but it was so influential because he had experience conveying ideas through non-verbal communication because he was a pastor
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Why are bright or flashing lights dangerous to people with epilepsy?
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They're not dangerous per se. They induce seizures which can be dangerous but need not be. My son is epileptic and the doctors sometimes try to induce seizures in a controlled setting using strobe lights.
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How does the political system of USA works ?
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Ok, I'll try. We have 3 branches of government: the Legislative , the Executive , and the Judicial . Basically, the Legislative write, vote on, and pass laws. The Executive then approves and enforces these laws. If these laws are challenged in court, the Judicial determines if the law is in keeping with the Constitution. Thus, for a law to exist, it must pass through three different checks and balances. Politically, we vote on the members of the Legislative branch. We also vote on the President, who then appoints his staff and also the Judges of the Judicial branch. Judges are appointed for life, so as to avoid a given political party to pressure the nominees. Every part of our political system is designed to move incredibly slowly. It is supposed to be very difficult to get any laws passed under our system. This means that radical, poorly thought-out laws should be the exception rather than the rule. If you understand only one thing about American government, it should be this: we sincerely distrust our government and try to limit it as much as we can. Even those who support a larger role for the federal government, still probably distrust the government more than most people in other countries.
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If a young child falls into a coma and then wakes up much later (say 20 years), do they think like a child or do they think like an adult?
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I wouldn't think so. Neuro pathways are made through experiences, socialization and practice. They wouldn't wake up worried about taxes and politics. They'd might still need to learn to tie their shoes or long division. They would be a child in an adult body. As such, their brains may be stuck that way, since the brain goes through a lot of physical changes during puberty, which could make certain cognitive developments impossible.I'm not a neuro scientist, but I know a little bit about how brains develope.Their brain pathways will have gotten no practice and so will be markedly underdeveloped. Their brain plasticity will not be like what you know from a child or an adult. Aside from that, since a coma only really happens when something greatly traumatic has occurred to the brain, something immensely traumatic since it lasted for years, your hypothetical individual will wake up severely mentally challenged and probably will never be able to function as an individual.
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How do doctors test for allergies? How do they determine specific chemicals or substances that cause allergies?
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The most common method is the prick test. They apply a dab of a substance on your skin and prick the skin with a needle. If your skin reacts you're allergic. They often test 20 or more substances at a time.
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why are bananas such a common fruit?
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Because of large scale monoculture the price is low. They can be picked unripe and then transported cheaply and ripened on the way. The skin is a decent wrapper which aids long distance transport. It is easily consumed since you just peel it - never underestimate the importance of this factor. The more fiddly it is the less popular it will be. The taste is inoffensive and is quite satisfying. Enjoy it while you can as the cavendish banana will soon succumb to a virus. If they find a replacement it probably won't be as tasty and the process will begin anew. If they can't find a replacement then they will have to sell other varieties which are more expensive.
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Do pinhole glasses improve your vision?
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Pinhole glasses does improve vision for near sightedness. In fact, it's used as a test for near sightedness as a refractive disorder of vision. Though it will not improve your vision over time. Most near sightedness is a problem with the shape or length of the eyeball, and pinholes aren't going to improve that over time. Pinholes act by filtering light rays to help your eyes see better. Once you take it off, it's gone. Some near sighted individuals lose the need for prescription glasses over time but that's a different story.Also pinhole glasses are impractical and won't improve your vision that much.
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how do eggs work??
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Someone's already answered the question, so I'll just add: have you ever cracked an egg to find a half formed bird inside? If not google it.
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Why is East Germany poorer than West Germany, even 30 years after the German reunification?
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30 years isn't exactly enough for a community to bounce back after oppression and poverty. Just look at black neighborhoods in America.Similarly, why are the Southern US States poorer than the Northern States?
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Why does your ring finger move when you flex your pinky finger?
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There are better answers elsewhere in this thread, but basically they're controlled by the same string. Here's a quick little experiment. Rest your hand flat on a surface, and bend your middle finger underneath your hand. In turn, try lifting your thumb. Easy, right? Now lift your index finger. No problem. Then lift your pinky. Yawn, this is getting boring. Now, lift your ring finger.
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How does the birthday paradox work?
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If a 20-sided die were rolled to get a number, how many additional rolls would have to be made before that number was rolled again it would be about 10 additional rolls on average. But if the 20-side die were rolled multiple times, and each time the number was written down, how many rolls would have to be made before a number was written down twice it would be fewer than 10 on average. The birthday paradox is the same. It feels like 183 people are needed for two to have a 50% chance of having the same birthday, but it only needs 23 because it's not two specific people matching, it's *any* two out of the 23.
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Why do phones/computers/TVs need to have a glass screen? What would happen without one?
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The imaging technology, be it liquid crystal or AMOLED or anything else, needs to be secured in place. Without the screen, the liquid crystal would basically spill out, or LED array fall out of the phone. It's the same reason why a fishtank is glass on all sides: to keep the water inside. Why glass, then? Well, you need a transparent material to let light pass through, otherwise it'd render the screen kinda redundant. That narrows your choices down to glass or plastics. And for many monitors, the screens are indeed made of plastic. For phones, however, you kinda want glass since the touchscreen is also the main input method, hence you want something solid, durable and relatively resistant to scratches. Glass also has a side benefit of being more marketable to consumers as a premium feature: Glass screens get more common as the price tag gets more expensive.
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What happens to lost or abandoned nukes?
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They'll corrode. That's about it. There's 0 chance they'll detonate. Detonation of nuclear weapons requires a number of extremely precise things to happen at once. It's really hard to detonate one by accident, and impossible for one to spontaneously detonate. There could be some local radioactive contamination depending on the condition of the bomb casing. Mostly, they're just going to sit there until they're found, if that ever happens.
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If alcohol is very effective when it comes to killing germs and bacterias, why isn’t it effective to fight a bacterial throat infection by gargling with a alcohol?
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Alcohol is very effective at killing bacteria, but it needs to have the right concentration: Around 70% or so, I'm not sure how much exactly. Less than that is going to be less effective. In addition to that, bacteria often form a protective layer of slime of some sort to protect themselves from things like alcohol. Like for example plaque on your teeth, which doesn't go away from just swishing a bit of vodka in your mouth. So in order to kill bacteria through this slime, you have to use other chemicals. Some of these chemicals don't solve well in water, which is why mouth wash often contains alcohol - not nearly enough to act as an antiseptic by itself though. Mouthwash without alcohol usually works just fine. /u/MysticMarbles, I suggest you read [this]", 'Gargling keeps it in the mouth, how is it supposed to contact the esophagus?
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Why can’t entire bones be transplanted?
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This happens a lot. The most common one that you've probably heard of is the hip replacement. Edit: for the second part if your question, bone donation - like literally transplanting a bone from one person to another - is pointless due to the state of prosthetics
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Why do people brush their teeth before and not after breakfast?
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It's a scientific reason. It dates back to who knows how long & the simple way to explain it is: because I'm a neanderthal with no culture", 'Habit perhaps? I honestly sometimes do it after
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How can we see HD media owing to the scientific fact that the human eye is only of 576 megapixels?
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I think you're confusing 576 Mpx with 576p, thinking that 720p would be unrecognizable. 720p is the dimensions of 1280x720 pixels or 921,600 total pixels on a screen. 576 Mpx is 576 **mega**pixels or 576,000,000, so even if every human eye had a 576Mpx limit, it could still distinguish SD and HD quality easily.
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Why are political parties in America so polarized?
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Because FUCK YOU! THAT'S WHY! In all seriousness, in a two party system with primaries, it's important to win the far reaches of your party, and the middle isn't politically viable.
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How do Satellites handle the millions if not billions of devices outfitted with GPS chips?
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They don't. The GPS satellites just broadcast their time and position continuously and GPS devices on the ground can calculate their own position by comparing 3 or 4 of these signals. Most phones wouldn't be able to transmit a signal strong enough to reach the satellites anyway.
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what are the basics of losing weight ?
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The basics? Burn more calories than you consume. Note that this is generally easier by consuming less calories, rather than burning more. It's easy to consume enough calories that burning them off becomes impractical.Simply eat less calories than your body needs. There are many websites out there which calculate the amount of calories you need per day. Just eat less calories than the calculated amount and you should lose weightEat less calories then you burn. In general your base metabolism will be dominating so you can not lose weight through normal exercise alone. There is very wide consensus on this. The contradictions you get is the best way to do this. If you eat less then you burn then you will feel hungry. People do not like feeling hungry. There are different ways you can try to make it easier to lose weight by making you less hungry. Some foods can make you feel less hungry then other food. There is also drugs and activities that can help. However the feeling of hunger is a quite complex topic and it works differently in different people and can change over time. There are also lots of discussions as to what kind of diet is best regardless of if you are trying to lose weight or not. Humans can survive on lots of different food and we do not have lots of conclusive evidence for what types of diet is best over long periods of time. A lot of people combine trying to lose weight with eating healthier as it becomes more important to get the right amount of vitamins and minerals as you eat less.
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Why does hitting a flashlight when the batteries are low keep it working for a short time?
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Electricity can jump a gap and continue on its way to complete the circuit . The stronger current, the larger the jump. So, you have fully charged batteries, and they aren't perfectly lined up, the flashlight will work without a problem. As the batteries loose charge, having them slightly out of alignment will cause the flashlight to go out. By knocking it, everything jostles around, you better connection, and the circuit is completed.
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Why do horses need horseshoes?
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They don't. We need horseshoes to allow the horses to walk on surfaces they wouldn't naturally walk on. If we left the horses alone, they'd manage just fine without.
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How did the USA recover after the Civil War?
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Good answers here about the post-war period. A couple things to add: 1) For googling purposes, this period of time is called the [Reconstruction Era.] 2) While the divisions in our country today have some of their roots in the Civil War, it's not exactly north vs south like it was then. The divide is more along the lines of urban vs non-urban, but even that's oversimplifying a lot. Unlike the Civil War, where the boundary between North and South was fairly clear, modern Americans are divided county by county, often block by block and house by house. I like to say that the boundary between us is fractal, which means we're probably indivisible, whether we like it or not.I hope things are different these days but when I grew up in Tennessee, some people were still sore from the war. Outside of school people told me that Lincoln overreached and that slavery had nothing to do with the "Northern Aggression" There were Confederate flags everywhere and it is easy to find White supremacist materials in flea markets.
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Why do they say we share 98% of DNA with chimpanzee’s but then we only share 50% of our DNA with our mother/father/siblings?
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Because of popular science journalists butchering the findings of actual scientific studies. If you take the DNA of a human, the DNA of a chimpanzee, throw away all the DNA that is clearly different between the two species, and only look at the DNA that code for stuff like the proteins used for vision and muscles, or which codes for nothing at all, it's 98% identical. Meaning 2% of that DNA has been changed by random mutations since our species diverged, without giving a sufficient evolutionary advantage to reinforce itself and become a new feature . In other words, 98% of some portion of the DNA you share with not only all members of your family, but also Sharon from down the street and Donald Trump, you also share with chimpanzees.Because we are measuring on two different scales. In the first case, we are taking completely randomized DNA as the zero point in the scale. In the later case, we are taking "two hypothetical randomly chosen humans" as the zero point in the scale.
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Why is it if you put helium in a balloon it floats but put it in a tank it gets heavier?
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I'm unsure about your wording. You're saying the tank gets heavier right? Not the balloon? & #x200B; If you mean the tank gets heavier, as long as the tank was holding regular atmospheric air, and you didn't remove any of it to add the balloon, you still increase its mass. Helium rises because it's less dense than sea level atmosphere, but there's a point where it would stop rising. Kind of like an air bubble in the bath tub, it always goes upwards, but once it reaches the air, it's not really going upwards anymore.
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Why are some public positions voted on while others are appointed or hired?
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The rules of government. That position of coroner is in your county's laws to be elected, not appointed.
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What prevents an employer from "firing" you if you want to resign?
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Theoretically, but then you could just claim you quit. Or you could claim severance because they didnt have reason to fire you. Either way that's real dumb and they wouldn't do that.
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The difference between agonists, partial agonists, inverse agonists and antagonists
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Agonists = Car is on Drive and you are driving 20-30mphAgonists = Car is on Drive, you're flooring it at max speed 150mph+Antagonists = Car is in Park.Inverse agonists = Car is in Reverse. Basically, agonists bind to the receptor and cause them to do X. Partial agonists cause a slight effect, but have less potency/affinity than some other agonist. Antagonists compete for the same receptor as an agonist, bind to it and prevent he agonist from binding. This is how many toxins work, they block receptors. Inverse agonists bind to the receptor and cause the OPPOSITE effect of the agonist. Rather than simply just blocking the receptor, they not only block but cause the opposite function to occur. So a partial agonist might cause a receptor to release slightly more than normal, a full agonist maximizes release, an antagonist blocks the agonist, causing the receptor to simply activate at its base rate, inverse agonist would cause the opposite ", 'Agonists - promote the function in one direction. Partial agonists - promote the function in the same direction but to a lesser degree. Inverse agonists - promote function in opposite direction. Antagonists - block the function .
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Why do airlines have ashtrays in the toilets when you can’t smoke ?
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People seem to forget, but I could smoke on airplanes as late as the year 2000. I did a random Google search for 'most successful commercial aircrafts' and [this link] popped up. The latest aircraft on the top 3 listed aircrafts came into active service in 1995. While smoking may have been banned in Europe and North America by that time, that might not have been the case in the Middle East for example, where th biggest airlines of the last 2 decades have originated . Also, airplanes are complicated machines. The approval for making a commercially successful aircraft takes a long time, and I'm sure goes through a lot of scrutiny. The ashtrays on the seats and airplanes; maybe it's about getting approvals for new designs of seats and doors and bathrooms that perhaps might not have ashtrays in them? And perhaps the aircraft manufacturers thought it's just easier to keep those ashtrays rather than go through the lengthy process of redesigning some things and getting those redesigns reapporved by different agencies?
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If someone is getting rich, someone else should be getting poor?
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If you're making 5000 a month as salary, then yes, your company is losing that 5000. But they're making it back, and more, by selling stuff to customers at a profit. And then, after a few years, the company does really well, so the founders sell it for $1m, even though it only cost $100,000 to set up. So $0.9m of new wealth has been created. & #x200B;
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Why do our bodies need to get taller from infancy vs staying small and just getting stronger?
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Size is super complicated: 1st you've got physics. Heat dispersion is a big one - to be able to run long distances and disperse heat, but also retain heat while not being active. Once you start messing with our size, you will have to adjust other factors, and that would have gotten rid of one of our biggest evolutionary advantage. Next is our body size to brain size ratio. Our brains, particularly the frontal lobe, are abnormally large. If you shrink us down, it would give us less hardware to work with, and less area to store the energy to run it. Seeing as its not insurmountable, this isn't the end all. Then there is the ability to hunt and hide. Our size puts us large enough to hunt big animals as a group, small animals alone, and with a small group and some know-how, fend off most predators. This way we could exist in manageable small communities. However, we are small enough to not require incredibly large amounts of energy. If you shrink us down, there would need to be many more as a group to survive, and even then our mortality would be increased, which would require more offspring to sustain population growth and thus less resources dedicated to the young, which would completely change our species. Of course reproduction is probably the primary reason we don't give birth to tiny humans who stay that size. That would make us also tiny humans, and seeing as you can't put a full sized person in another person, birth would be impossible. But, even if you gave birth to a micro human, who then rapidly grew to a tiny human - the tiny human would hardly be able to carry it around, care for it, and the nutritional demands would be massive.
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how do socks prevent our feet from getting sweaty
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socks don't prevent the feet from getting sweaty, but prevents feet from *feeling* sweaty since the fabric absorbs the sweat away from the skin.
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in the english language, why do the vast majority of swear words have something to do with a bodily function or are sexual in nature?
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jävlar" and "helvete". The first three are names for the Christian devil, the last means hell. Words become swear words because they're taboo. This is really interesting when it comes to Swedish because at least about 85% of the population don't identify as Christians. So there is an effect of them being taboo at some point and then just being propagated as taboo, even with the underlying reason removedMany of the words we find vulgar in English come from a time in Europe when there was a great divide between rich and poor. The rich spoke French, and the poor spoke Germanic. This is also why we have different food words. The poor raised a cow, so they had a word for the living animal, but the word for the meat was more reveleant to the French which is where we get “Beef”, from “Boeuf”. The poor raised “Chickens” but the rich ate “Poultry”. The poor raised “Pigs” while the rich ate “Porc”. Likewise, words for more taboo subjects were seen as swears when said in the “lower class” Germanic. Where “Excrement” has a scientific connotation, the more guttural Germanic “Shit” was a bad word. “Fuck” comes from “to strike”, as an innuendo, but was of course Germanic. Long story short, it was a class issue. What the poor people said was looked down upon. Even today, it’s considered “classless” to swear, which relates directly to the idea of the upper class looking down on the lower.
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why does your body wait with sweating until you’re done moving sometimes?
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It doesn't. When you move the wind is blowing and it causes the sweat to evaporate and to cool you down. When you stop moving you don't get as much evaporation so you don't cool down as much so you then sweat more because you are hot. You were still sweating before, though.
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What is so great about being a senator/ congressman that people will basically sell their soul to keep or obtain this job?
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Lots of sweet benefits. I can't remember the politician's name but a year or so ago he got into a huge scandal and was asked to step down. He refused and it turned into this giant issue and it was discovered that he was very close to getting free healthcare for life. He was only staying and dealing with the firestorm from the mediabto get that benefit.
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How did Google Chrome become so popular?
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Internet Explorer back then was absolutely horrible. It was really insecure and many websites didn't even work with it correctly so you pretty much had to use another browser. When Chrome came out it was much faster than Firefox and had many new features so a lot of people switched over.
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Does the 22nd Amendment allow a President that served to terms to be elected as Vice President? And could he replace the President?
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If you think about it, no president has ever taken a job afterwards. It's the highest office in the land . It's not likely they would take a lesser position anyways once one has held the top spot. Presidents might sit on a corporate or charitable board, do the public speaking thing, and act as diplomats . I will add the caveat that they could. But to take a lesser role like VP is kind of a bad thing for their legacy.
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How are producers and actors in drug documentaries allowed to either posses, partake, and/or film something illegal?
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They don't really have any protection, but it's not really good policy to prosecute in some of these cases because of the implications on freedom of speech/press. Reporting does absolutely contribute to and act as the catalyst for prosecution, but the priority of prosecuting drug users who appear in documentaries is likely just going to be pretty low on lots of these cases. You might also end up with venue problems if the documentarian doesn't disclose the location of the person. For crimes, you need to prosecute where the crime actually occurred. If no one knows where it occurred, you'd have to figure out the location through other means like potentially subpoenaing the documentarians, which a lot of prosecutors might not want to do. I think you'd also have potential evidentiary problems.In reenactments they arnt real drugs. In the real footage documentaries, the person in possession of the drugs almost always has a mask covering their faces, the producers and filmers are never actually in possession of any drugs, just filming it and talking to the people that are in possession of the drugs.I'm not seeing an actual answer to your question. Just a bunch of people regaling you with memories of illegal activity of their own. It's called Reporter's Privilege - _URL_1_
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Why is urine ok to drink even in an emergency, even though it is the concentrated waste material of body? Doesn't this make the body open to diseases?
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The kidneys do not fully concentrate the urine during normal times. There is some 'free water' available for the kidneys to further extract if they need to. As you drink your urine the kidneys remove more and more of this free water until the urine is maximally concentrated. This takes a couple of days at which point, drinking your urine would no longer provide you with any usable water.
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How do people get surprised and die in wildfires?
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Not exactly an answer to your question, but not everyone has the ability to just up and leave. Some families are living paycheck to paycheck, and can't afford to leave every time a wildfire gets close to their house. Gas and housing elsewhere would get expensive fast, so their only option is to wait until it's guaranteed to hit their area, but by then it's too late. Same logic applies with the hurricanes hitting Florida; not everyone can up and leave several times during hurricane season. And if they can't afford to leave town on a regular basis, they DEFINITELY can't afford to permanently move elsewhere. Some people are financially trapped into these natural disasters.
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Why does vodka get syrupy in the freezer while water stays the same viscosity until it freezes?
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Viscosity refers to a fluid not wanting to move from one place to another very smoothly. This resistance to motion can be due to: 1) large molecules in the fluid getting tangled up and tripping over one another and 2) strong attractive forces between molecules that glue molecules together and prevent them from moving forward. So if you compare vodka and water at the same temperature, vodka contains water as well as larger molecules like ethanol, sugars, flavor compounds, etc. while water contains only water. Things like ethanol and sugar interact strongly with each other and with the water solvent while also being big enough to have the tripping effect that you wouldn't see in tiny pure water molecules. Also, because there're ethanol, sugars, etc. in vodka, it will also freeze at a lower temperature than pure water. As temperature decreases, molecules don't want to move as much and hence viscosity increases. So if you compare the two near their freezing points, vodka will appear more syrupy since it's still a liquid below water' freezing point.
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are external hardrives essentially bigger USB drives, or is there something that differentiates them
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External hard-drives are just normal hard-drives connected via a different bus. If you pry open the case you will often find the regular internal hdds with their SATA connectors stuck in an SATA-2-USB connector that the cable to the computer plugs into. The actual drives are exactly the same, but instead of plugging into the SATA or SAS connectors on the inside of the case they connect to the USB ports on the outside. Some external hdds even come with eSATA connectors which are even more like the internal connectors, but eSATA and firewire and other ways tot externally connect storage have pretty much gone away and been replaced by USB. By the time the whole thing reaches the OS and the programs running on it the difference have been largely abstracted away also the Os is still aware that a disk is removable, but the programs don't care and dno't know.There are two main categories of storage devices: magnetic disks and flash memory. Magnetic disks use a physical read-write head that travels over the rotating disks. These are relatively slow and prone to failure. But they are very cheap: less than $50 for a terabyte. Flash memory is used in multiple forms: USB sticks, SSDs or SD cards being the most common. In essence these are all the same, and work purely on electric signals without fysically moving parts. Therefore they are a lot faster, but also more expensive. The main difference between flash devices is the connection to the rest of the system. USB is the slowest protocol, so SD cards and especially SSDs connected through PCIe are much fasterSome are essentially big USB drives . Some are spinning drives like your big old-school non-SSD hard drive, just in an enclosure with a bit of electronics to communicate over USB.
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how surveyors know where they're at on a property and where that property begins and ends? What points of reference do they use and how do they know theyre accurate?
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Pre-measured reference points. Usually metal stakes driven into the ground. Measuring from these points gives them an accurate reference to how your property is located relative to the geomatics benchmarks. On the property map, it will list the reference points that the lines are measured from, IRC.It's been a while since I had anything to do with surveying, but that's what I recall.
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California specifically seems to always be in a drought, but surrounding states don't seem to have the same issues with fires. Why is that?
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One thing that isn't getting brought up is how populated California is. A fire in some states can get to 100k acres and still be miles from any towns or cities. Where in California a much smaller fire can be right up against a town or a city very quickly. It makes them much more serious when peoples property and lives are in danger.
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If we know the age & the rate of expansion of the Universe, why can't we calculate how big it actually is?
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We know how big the observable universe is. We don't know how big the entire universe is because we cannot see it, and it may be infinite in extent.
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With how much the Earth has changed,would prehistoric creatures as we know them even be able to exist in today's environments,even in the best of conditions?
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Most of them wouldn't just because the oxygen content. Too low for most insects and things like dinosaurs, too high for most things with just a few cells. I don't remember if plants or jellyfish are older, but older than that.
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Why is the production of iron atoms a sign that a star is dying?
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Iron can't fuse inside a star into a heavier element. It then goes supernova soon after iron forms. Heavier elements are formed from collisions made at high speeds from the supernova
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Why do people answer with questions in Jeopardy?
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That's the setup of the show. Trebek gives the answer, then the contestant have to figure out what the question was.
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How did mammals survive mass extinction 65 million years ago?
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Quite a lot of them didn't. The extinction event wiped out species across the board. In fact pretty much any species of land animal that was larger than a medium sized dog became extinct during or shortly after the event. Mammals had the advantage of being overall smaller and more adaptable. It easy for something small and short-lived like a rat to survive a catastrophe than for a large species of animal which needs to invest a lot of time to rear young and which needs a lot of food to survive. The Dinosaurs got not all wiped out, some species of feathered dinosaurs that were equally small and adaptable survived. We call them and their descendants birds. Being aquatic or semi-aquatic seems to have helped a lot, also many species of aquatic animals also became extinct as their environment was disrupted. One important thing to remember was that it wasn't really the impact itself that killed of everyone. It was what happened in the aftermath. We usually speak of a singular event, but that is in contrast to the millions of years between events. The extinction event as a whole may have been over in a few centuries or millennia or may have lasted longer than modern humans have been around. Generations were likely born and lived and died during the event. Which was not so much the impact itself but the climate change and disruption of everyone's environment that killed the animals. The dinosaurs and other prehistoric animals that became extinct didn't die all die in a fiery explosion, many lived but had not enough to eat because all the food had gone away. There were less and less of them each year until there wasn't any of them left. The survivors were the ones who managed to hang on for long enough until the climate stabilized and they could adapt to the change in environment.
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Why does it seem like more people get colds/flu during the colder months of the year than warmer months of the year?
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I saw something about this on TV a good while back, so from memory: Some viruses have a kind of shell that hardens in colder temperatures, allowing them to survive longer outside the body. So in warm weather they don't last as long and don't spread as easily, but in cold weather they can be carried about further - on clothes or in the air - and in that way end up getting to more new hosts before they expire. That's why there's more colds and flu in winter months.
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If the volume of blood in our body, as well as the space that blood has to occupy are both (fairly) unchanging, how can our blood pressure change?
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Both the amount of blood and the volume of space it occupies can change. Typically for the purposes of measuring blood pressure, major factors are going to be the amount of blood the heart is pumping into your system, and the resistance of that system to the push. For instance, your blood vessels can dilate and constrict , which in turn decrease or increase resistance to the 'pulse' of blood pushed by your heart. Your vascular system can also get stiffer from conditions like arteriosclerosis, which can diminish your body's ability to moderate blood pressure. Other things can also affect blood pressure, such as standing up and, of course, major trauma letting it leak out.
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Why Macs don't get viruses and what makes PCs so prone to them?
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It's about market share. There are just way more windows computers than macs. It makes for a better target. Not to mention just how their os is built makes it easier than Unix that mac is based on. Macs might not easily get traditional viruses that can take over a computer just because of some junk email, but macs can get malware. Torrents, bad browsing practices, out of date software can all lead to vulnerability for any system.
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How can people tell when someone is staring at them?
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Basically, there are two ways of thinking about this: 1) It's a phenomenon called recall bias. Basically what happens is that you know you have idly been looking at someone randomly in a public situation and made eye contact, and it was awkward, or whatever, so when you 'feel someone staring', you sub-consciously look around for someone who is invariably looking at you. It's just one of those things where statistically, it makes sense that at least one person is actually looking at you, intentionally, or just lost in thought. 2) Humans actually have a sense we haven't learned to tap into yet which allows us to feel things that seemingly do not exist. It's like being able to read a book that you can't see. You sense something , so you look around, and realise someone's looking at you.To follow up with thetreece, ohitspreston and applejuiceinthehall. Humans are very good at recognizing the pupils, and thus the direction a person is looking. You might not consciously try to find out where their gaze is going, but humans are so good at it, that it just happens
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What exactly are the potential consequences of spanking that researchers/pediatricians are warning us about? Why is getting spanked even once considered too much, and how does it affect development?
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The simple but on-point answer is this: Humans are a monkey-see-monkey-do species. Our young learn from what we tell them, certainly; but they are **always** learning from what we do around them - and to them So, spank a child for disobeying? You think you are only teaching them to obey. But the deeper behavioral teaching is there, too *If someone doesn't do what you want, hurt them.*
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Why are men so disinterested in sex once they've ejaculated?
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After browsing the [wikipedia page for refractory period], it seems the cause is the release of hormones most commonly theorized to be oxytocin and prolactin. As for evolutionary theories as to why we have the refractory period, [here's] an ELI5 responder regarding why. TL:DR Women used to have sex with multiple men, your penis is shaped in a way to remove other men's sperm. You have refractory period as to not remove your own, while having less sperm to give.Men have what’s known as a refractory period. It’s like a charge up time until the next time they’re ready and fully able to have sex againWhy are people so disinterested in food once they just eaten?
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How does plane overbooking occur? Why don’t the airlines stop selling tickets once the plane is full?
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Planes want to fill every available seat they can. They know that on average there's a certain number of people that don't show up so they sell more tickets than seats. Sometimes they're right sometimes they're wrong.
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Where does a queen bee come from? How and with whom are they made since there is no king bee?
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We call them queen but they serve the rest of the hive. The workers are the ones in charge. The queen is there only to ensure more sisters of the workers are born. She's a normal worker that gets a special diet when being formed, to become the reproductive organ of the hive. To accomplish this task, male drones are created whose sole task is to mate with a queen, then they die. In the summer they have a huge party with drones from many hives congregating. Virgin Queens show up. Then the males mate with them, and in the process deposit their genitals onto the queen and die. The queen goes back to the hive where she serves her sisters for life, creating more and more sisters.The Queen starts out as a normal bee but eats a special, specific food source which makes them into a Queen.Then if the current Queen is performing like she should the hive will create a new one and evict the current oneMore interestingly, at the end of the bee year , there is the great drone battle.The hive has decided that their queen is good enough for another year and therefore all these fat drones that do nothing but eat are useless,So, the workers drag all the drones to the hive exit and kill them. In these days you can find handfulls of dead drones at the hive entranceInterestingly enough, the queens don‘t mate with drones from their hive.There are ‚mating places‘, where lots of drones can be found at the right time of year.The queen and her entourage fly to that place and the queen mates with many drones.The queens mate only once in life and usually act as hive mother for 2-3 years.Collecting sperm from many different drones allows for diversityIf drones come from unfertilized eggs, why are they considered male or even given a gender ?
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Why are all the planets in the solar system on one two dimensional plane?
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I don't know if this allowed here, but this video will likely give you a better understanding than any comment possible here: _URL_0_
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