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what happens when a clothed cat falls over?
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Exactly that. They feel restricted, like they cannot move, so they stop trying. This may help An Engineer's Guide to Cats 2.0 - The Sequel: _URL_0_ Also, not all cats to it. Mine doesn't.
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Why do some people tan and some get sunburned?
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Being sunburnt is your bodies reaction to excess UV light. The pigment that colors our skin is called melanin. Those who have more tanned/darker skin have more melanin. Melanin serves as the first layer of protection from UV rays, once this layer has been overloaded, then the skin will start to become sunburnt. So let's say the skin is exposed to enough UV rays. The skin will realise that this amount is harmful and start producing more melanin. This is why a lot of people have a tan after recovering from sunburn. This mechanism can still be triggered even if the person doesn't get sunburnt. On the other hand, people who are very pale and cannot get a tan no matter how much sun they expose themselves to likely have some form of melanin deficiency.
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Why is tear gas internationally banned for use in warfare, but not for use by police?
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All chemical weapons are banned for use in warfare, not just tear gas. If the police are firing gas canisters at a rioting crowd, I can be pretty sure it doesn't contain VX.
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Why do adults need less sleep than children?
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Every noticed how when you're taking in a lot of new impressions you get more tired? Like when traveling, living in a new environment etc. Not only are childrens brains under intense development physiologically, they also need to learn an immense amount of new skills, from basic ones like just getting the hang of your body, talking and developing a social intelligence, to things like math or school stuff in general. As we enter puberty, and even more so once the brain matures in our early twenties, the brain starts to enter a more static state. It starts removing paths and structures in the brain it doesn't consider necessary. This makes our brain a lot more efficient, and allows us to refine our skills and expend less energy on maintaining it. Since we don't need to maintain the brain quite as much and continually make so much room for new things, we also don't need as much time to process everything, as we do when we sleep. Interesting side note: There are some studies that have linked neuropsychiatric issues like ADHD and ASD to the brain not "shedding" its less important structures. I know me and my SO who both have ADHD and ASD have more need for sleep than other people I know, and are highly susceptible to mental fatigue, which makes sense with the above explanation^ All of this about brains, plus their bones and muscles are growing all the time which means they need more sleep to cope with the physical building work
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Why are people from Manchester called Mancunians?
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Manchester's original Latin place name was either *Mamucium* or *Mancunium*, depending on the source and time. Over many centuries, this ended up becoming the name *Manchester* that's used today. *Mancunian* is simply derived from the older place name. A side note, but it's not uncommon in the UK for demonyms to be derived from an older root: * Liverpool: Liverpudlian. * Manchester: Mancunian. * Newcastle: Novocastrian.
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Do other languages need the use of a Thesarus or is it only English that has so many synonyms?
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Thesauruses and synonyms exist pretty much in every language. Synonyms are there to describe very similar objects or situations in slightly different ways to give a more precise picture. Most languages have some space to allow for such variations.
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How do people with Alzheimer's suddenly remember a fact about their lives, but forget it a moment/day later?
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Alzheimer's messes with the neural connections in the brain. Think of it like a shorting wire. Sometimes the signal will get through, sometimes it won't.
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Why when you get sunburnt is drinking a lot of water a huge importance?
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Basically sunburn is inflamed skin and its going through the healing process. Our body uses water as a transport mechanism to provide nutrients and remove waste products. Sun burnt skin needs to be replenished with nutrients and have the injured skin bi products removed. More water means more transport and removal of this critical healing process.
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When big movie producers send out movies to be reviewed by critics, shouldn't it be easy to catch who uploaded the DVDScr?
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It's a decent idea. Amazon tried to do something simillar for their e-book sale, they thought of placing 1-2 random spelling mistakes in each one, to see who uploaded something at a torrent tracker. But eventually they abandoned the plan. I'm not answering your question though :(
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Why do you feel cold and nauseous after breaking a bone?
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Shock. You both is redirecting your blood to your vital organs, which drops your blood pressure. Shutting down your digestive system and flooding your body with hormones such as adrenaline enables it to have the resources it needs to deal with the problem once it knows what it isI could be wrong but I’m fairly sure it’s an adrenaline rush mixed with a bit of shock. I always get cold and shivery when I board planes and my hearts going a million times a minute so I think it’s an adrenaline rush type thing. Source: nothing, just my opinion', "I also fractured my hand it's called a boxing fracture however I wasn't boxing I just hit a piece of slate granite, I don't remember feeling nauseous or cold I just remember the pain arriving about 40 minutes after the incident, it started to bruise the next day and it took over 6 weeks for it to fully heal and cold weather would agitate the area.
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How does my charger know to stop charging my phone when it's at 100%?
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The usual way the state of charge for any battery is measured is by voltage. It's most accurate when the battery is full or nearly full or empty. My guess would be that there's a target voltage and when it's reached the cellphone disconnects the charger electronically. Proper battery monitors actually use a more complicated algorithm to get the most accurate state of charge.
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What would if we dug a hole across the earth and threw and object in there?
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Gravitational pull is basically zero at the center of the earth, so an object would fall and pass the center, but then be drawn back the opposite direction. Each pass through the center of the earth would slow the object down, eventually leaving it suspended right in the middle.
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Why is the filming and distribution of pornography legal, while prostitution is illegal?
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I'm not the expert or anything but my guess is that porn actors and actresses go through severe and mandatory regulations, policies and laws in order to be hired. They need to do weekly tests as proof that they are healthy and have no diseases. On the other hand, prostitutes don't have any regulations at all and they probably won't care if they give you a disease or not.
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When you eat healthy and then eat a cheat meal, why does the junk food taste so bad and make you feel sick?
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A lot of Junk food is really high in sugar and salt, while a lot of home-cooked 'Health' food is much lower in those things. As far as taste: When you're eating junk food all the time, your senses get used to the ultra-high sugar and salt content. When you switch to eating 'health' food all the time, you get used to the lower sugar content, and you become more sensitive to the less-dramatic flavors that would have been overshadowed by excessive sweetness/saltiness. This also means if you go from healthy-to-junk, then you'll be suddenly bombarded with syrupy, excessively salty food. As far as feeling gross: Eating junk food in excess can create a dramatic blood sugar spike, then blood sugar drop. The rapid swing of blood sugar and insulin response can create horrible headaches and general gross feelings. Those same things happen when you eat junk food normally, but if you're doing it all the time, your body kinda adjusts to feeling gross and sets that as the baseline 'normal' - Having excessive junk food as a 'cheat' day means it's 1 day of shit after a general baseline of 'pretty ok' so the feeling is more obvious.
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Can I fire a gun in space?
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Yes, it will fire at normal bullet speeds. The bullet contains everything it needs to fire, so you don't need to worry about that. The only difference would be that the bullet would not lose speed to friction with an atmosphere and the trajectory wouldn't be curved due to gravity.Yes, gunpowder contains fuel and oxygen source so it can combust without atmospheric oxygen. The speed might be different from normal precision shooters report a difference lower velocity in cool, humid air vs warmer drier air.Yes. There's no reason it wouldn't work in space. The bullet will have approximately the same muzzle velocity as on Earth assuming you've anchored yourself somehow to prevent losing some energy in the kick.
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why do we treat/accept Monday as the first day of the week, but almost all calendars show Sunday as the first day of the week?
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I don't know about Monday being the first day of the week. It's moreso the first day of the workweek, and why its treated like the first day of the week probably originates with that. In fact, in Vietnamese, Sunday is literally translated to "First day" and Monday is "Day two" and so on for the rest of the days.In my experience it's more common to see calendars and diaries showing Monday as the first day. But Sunday-first isn't rare. Judaism denotes Saturday as the day of worship, and Sunday as the first day of the week and a working day. Christianity moved the day of worship and rest to Sunday, probably as a deliberate contrast to Judaism, but still traditionally regards it as the first day of the week. Western societies that have become largely secular but have Christian roots retain Sunday as the day of rest but as work, not religion, has come to dominate people's life it's natural to consider Monday, the first day of a period of work after a period of rest for most people, as the first day of the week.In Mongolia, calendars begin the week on Monday and the translation is "first day", Tuesday is "second day" and so on until Saturday and Sunday which translate to "half good day" and "full good day".
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How did ships work?
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A sailing ship cannot go *directly* into the wind, but it can engage in what's known as *tacking*. Tacking is when a ship sails at a 45^o angle into the wind. It can repeat that process at a 45^o angle in the other direction into the wind, and end up moving slowly, but ultimately directly into the wind, like this: _URL_0_ As for the wheel, I imagine what you're seeing in the movies is the rudder coming to a straight position, which it'd be pulled to while the ship is moving forward. It'd probably take a lot of force to turn the wheel left or right, but letting go of it would straighten the rudder back to it's straight position.The wind pushes the ship, but the rudder provides another push to move the back end one way or another. It's like one person pushing you straight forward, and someone else pulling on your left arm. You'll move forward , but you'll also move to the left . As far as how they spun the wheel, there's a neat property of pulleys. You can trade distance for strength. With one pulley you could pull a rope through it 5 feet and raise a 50 pound weight 5 feet. If you string together multiple pulleys you gain an advantage that would let you lift 500 pounds 5 feet up, but you 'd have to pull 50 feet of rope. The wheel spins fast because they use pulley systems to make the wheel spin further but the rudder moves less, letting them use the extra work to overcome the weight of the rudder and the force of the water.The simple answer is that the wheel doesn't spin so easy, movies lie. If you need to go the direction the wind is blowing from you basically traverse in front of it going back and forth and a 45 degree angle. So if the wind is blowing south and you need to go north you go northwest for a while then you turn northeast for a while.. rinse and repeat.
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Why do we have registries for sex offenders but not for murderers?
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[Recidivism Rates] - the statistics and likelihood of a person repeating an undesirable behavior after they have either experienced negative consequences. Sex Offenders are statistically more likely to offend again than murders are. Furthermore Sex Offenders are really easy targets for politicians to use to their advantage with their voting base. ", 'The short answer is recidivims rate. For sex offenders, it consiberably higher than for murderers. It´s pretty intuitive to understand, think that most sex offenders are acting on urges which can´t be "healed" by therapy or anything else, but a decent number of murders are kind of a "one-time-thing" Because when things involve children, people care a lot less about preserving rights.Sex offenders are statistically more likely to re-offend than murderers. So it's considered more important to keep an eye on them.
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What happened to the new CEO's weekly AMAs?
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They got tired of lying and having to backtrack on everything they bullshit about. So it's best to avoid questions.Oh, he's a fraud like the rest, I hope that helps clear up any confusion. Or like the other person said: "They got tired of lying and having to backtrack on everything they bullshit about. So it's best to avoid questions."', "Probably got sick of the flame war and didn't see any benefit in continuing it. Some reddittors get pretty militant over stuff.
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How do natural wildfires start?
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Lightning is natural, and starts a surprising number of fires. At our annual campout this year we watched smoke jumpers and helicopters spend the night putting out a lightning-spawned fire on a ridge only two or three miles away. AFAIK, everything else is man madeNatural wildfires are mostly started by lightning strikes and autoignition **.
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How are wooden barrels made to not leak?
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It takes a long time to build a barrel, but the longest time is simply letting the wood air dry for a few years. The easiest simple explanation is that they use the two iron bands and a big old hammer to bang the wooden slats in so that they fit VERY tightly to each other. Like we're talking massive pressure. Water won't get through that . It's just super tight and they use a hammer, a winch and the iron bands to achieve that.The wood is dried very thoroughly then fitted together as tightly as they can with iron/steel hoops. When they fill it the wood absorbs some of the liquid and swells making the seals even tighterWatertight barrel making is a specific type of carpentry called cooperage. Those who make barrels are known as coopers. Simply put, they take wood sliced into parallelograms and bend them into shape, then hammer them into place on the bottom of the barrel. Then steel hoops are added, bringing the angled cuts together perfectly. A lid with a groove is then hammered into place.
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Why do people assume that a guy driving a big truck is overcompensating?
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Because very few people actually ***need*** a big truck, especially in cities. They don't typically tow large loads, or haul three refrigerators at the same time very often, so people assume it's a macho thing.
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Is the Human Brain faster than a computer?
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It depends on what you mean by "faster". Can the human brain show a correct response to a simple external stimulus or output a simple computation more rapidly than a computer? No. Are there tasks that the human brain can do more rapidly than a computer? Yes. Mostly because there currently are tasks that cannot be done by computers *at all*. If a computer is capable of doing a task, it is generally possible to speed it up by using more resources, so it is almost always possible for the computer to beat humans in terms of speed for those kinds of tasks. I can't think of a task that a computer is capable of doing which it cannot do faster than humansFaster at doing what? A Human Brain is very fast at doing certain things, such as image recognition, but computers are much faster at number crunching and calculation. Although this is just a general case, as a computer with neural network architecture similar to the brain could categorize images and sounds much faster than the brain, and there are people with neuralogical disorders that can tell you if a 200-digit number is prime or not almost instantly, which is a lot faster than a typical desktop PC could calculate.
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Why orange juice tastes so bad after I brush my teeth?
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I read somewhere that one of the ingredients in toothpaste kind of deactivates the part of your tongue that tastes sweet things. So OJ minus the sweetness is that sour icky taste you're thinking of. Here it is: _URL_0_", 'The emognulate part of your tounge that reacts to sweet sensations is inhibited by the colgatious chemical found in most toothpastes. An absence of sweetness in most juices leaves nothing but an unpleasant, bitter taste.The worst was eating a peach. It was like having Gaddafi semen in your mouth after he's drank a pint of boiling vinegar .I imagine.
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We do people featured in drug documentaries not get arrested?
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and yes i know i wrote we in the title instead of why. you're so smart for spotting that.
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How come I jump as high off 2 feet as I would off 1 foot? Shouldn't I jump higher off 2 feet? Which would let me jump higher?
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Depends on whether you are moving or not. If you are getting a running start, jumping off one foot is much better. You can drive one if your knees upwards to change your forward momentum into vertical momentum. If you are standing still, two feet is the way to go. If you can, pump your arms to get more power. That's about all I've got.
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When oligarchs like the Koch brothers die, where is all that power gonna go?
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Both of them have children. Whether the children can exercise the power is a thing yet to be seen. Just like it was not known at the time when Fred Chase kicked it which of his four sons would do whatMy uninformed bias is that whoever is underneath the power position of the Koch brothers .
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Why do we say 'the NSA' but rarely 'the NASA'?
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"NSA" is an initialism, like FBI or most 3-letter agencies. "NASA" is an acronym and linguistically treated like a nounWe treat NSA as an acronym and NASA as a proper noun . In other words, you say n s a, but you also say Nah Sah. NSA is in a subset of acronyms known as "initialisms," which are just strings of letters rather than pronounced words. Initialisms are treated differently grammatically than other acronyms.
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How do short films make a profit?
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There are tons of "shorts", after a fashion. They're just on television -- most TV shows are basically in the tradition of the serial shorts , adapted from cinema to the small screen. Modern short *films* mostly don't make a profit. Many get made by student filmmakers and artists, either as exercises, vanity projects, or to make an artistic point. They often don't cost very much to make: maybe $25,000. More expensive Hollywood/studio shorts get made essentially as prestige projects, to draw attention and praise to the studio, director, actors, etc. Disney/Pixar and their peers still make animated shorts for a few reasons. The short acts as a "bonus" attached to a feature film, which audiences like. It's a side project the crew can work on while taking breaks from a main project . The short also sets a mood, without being a part of the feature film itself, which is useful to the director's storytelling. And the short is a chance to experiment with technical and storytelling techniques, which are still emerging in animation.
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what makes "neon" colors so bright?
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> Sometimes instead of being called neon colors they are called "fluorescent" colors. What makes them fluorescent is that they absorb light you normally can't see and then release that energy as visible light. The result is that if you shine light that has UV in it instead of just reflecting light like normal colors do, they actually glow as if they were a weak light bulb. The end result is that there is actually more light of those colors hitting your eyes so they seem brighter. > As for why you can't think of "dark" neon colors, it's because what makes them distinct is that they add more light, while darkness is actually the absence of light. _URL_0_rather than reflecting colored light, they actually emit it.
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Why are chocolate stains so hard to get out while other stains aren't?
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Part of it is that chocolate is super dark, of course. It's also ground very fine too make, so it gets everywhere. And the bits that are not tiny teeny chocolate powder are brown cacao oil. So you've got those three things to make the perfect storm of stains.
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how come we couldn't use built up pressure to launch objects into space?
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It's actually an idea, called the Verne Gun after Jules Verne's classic book *From the Earth to the Moon* and like you said, the initial object would be fired into near earth before propulsion or other means are used. The problem is pesky G forces. In a rocked it's a somewhat slow build up, but firing shit out of a massive cannon is going from 0 to hypersonic instantly. This would likely turn any astronaut into fine paste while the rest of the craft is torn apart by the atmosphere resistance.
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How does eardrops works in reducing pain or infections?
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It depends on the medication contained within. Many contain antibiotics and many contain steroid anti-inflammatory agents which reducing swelling and pain associated with it.
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Why are fingerprints different person to person?
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Actually, even identical twins have different fingerprints. Minor differences in fingerprints arise from random local events during fetal development. The genes determine the general characteristics of the patterns of fingerprints. However, inside the uterus, finger tissue comes in contact with the amniotic fluid, other parts of the fetus and the uterus. Some experts point out, for example, that touching amniotic fluid during weeks 6-13 of pregnancy significantly changes the patterns of fetus’s fingerprints.
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Why is the scandal with Chris Christie and the lane closures a big deal?
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It isn't just that someone died in an ambulance. Granted, that is the worst possible outcome for the situation, but what makes those responsible for this situation reprehensible is the fact that the lane closure was designed to cripple the city of Fort Lee. People would not be able to get to work on time, stores are going to see decreased sales, a lot of traffic, if at all possible, was diverted. And this was done with the callousness of a 15YO playing Sim City and trying to punish the people of the town by creating a volcano on the only road out of town. Look, Christie is a bad ass. He presents himself that way and that is what the citizens of Jersey want to represent them. But you can be a bad ass and not be a bully and Christie crossed that line.
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how do scientists fire just a single elementary particle?
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Usually they do not. For example the Large Hadron Collider emits protons in bunches of 100 billion. [source.]They don't, but they do clever things like fire a very small stream of them and then put a bunch of "filters" between the beam and the target detector. In many cases there are filters which only let light with a particular polarization through, and if you work it correctly according to the power of your beam, you can work out a system that lets a SINGLE photon hit your detector each time you "fire" it. This is how you can see shot noise build up to form a full image, or watch individual photons form, over time, interference patterns on a plate.
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Why do we "hallucinate" while reading?
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Go to a doctor. There might be something wrong with you. Or perhaps stop chewing on the book. Thanks.Uh do we? I visualize what I'm reading in my head but that's about it.
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How can enough oxygen remain in crowded cities where there are very few plants to photosynthesize the CO2?
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there are no impregnable barriers separating urban air space and surrounding air space, so air can move freely back and forth. as such, not only can wind bring in oxygen, it can also remove CO2 and other components that make up "air"If cities were incased in air tight glass bubbles that might be a problem, but their not.
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Can insects really make a home for themselves inside a human's ear canal?
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Yes. Yes they can. There are also blowfish which can lay eggs in your eye and then grow maggots inside your eyesocket. There are also 3 foot long nematode worms which can get into your feet, grow into your leg, and then spend weeks crawling out when they die. Fortunately, we are pretty close to wiping out that particular one.There's a fish that can swim up your urine stream in Africa or South America or something. Darn right they can crawl in your ear.
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How can someone sue over potential profits?
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There is precedence in the concept of tortious interference. Let's say you arrange to sell some product to a potential buyer. But, before they actually buy the product, they bow out of the deal. You find out that some third party was spreading rumors or lies about you, and that directly led to the buyer not following through with the deal. This is tortious interference. In this case, the sale that never happened would be the lost "potential profit" and the victim could stand to recover that in damages from a suit. It 'd be upon the plaintiff to demonstrate and validate what those loses were . All that said, it is never a requirement in a court of law to prove things "unequivocally." Given that this is a civil matter, the bar would be the "preponderance of evidence." Basically you have to just show that it is more likely to be true than not true. That is, if you demonstrate that it is 51% likely to be true, you 've met that burdenIn a court you never need to prove something unequivocally. Generally, you just need to show that, more likely than not, the act deprived you of profits you otherwise would have made.Let's say I plant a dead rat in your restaurant, take a picture and post it on the internet. I eventually get caught and confession, and you wind up suing me. What are your damages? Even if you can show fewer people are coming, I could claim since you don't know that it won't get better tomorrow, I shouldn't be responsible. That where potential profits come in. I hurt your potential profits, even if you can't say precisely how much. Your lawyer will make an estimate, mine will dispute it, and a judge and jury will decide how much is fair.
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If hair is supposed to be "dead", how does shampoo+conditioner+hair creams work in order to make "dull, life-ess hair" into smooth, shiny and silky?
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You know how shoe polish and leather conditioner will make old shoes look new again while exposing them to water, mud, and sun light will make them deteriotr faster? Even though hair is not living, they could still benefit from adding more moisture while exposing them to the elements could still destroy them.
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Why is "18 years old" most desirable in porn films? (NSFW)
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They know their market. Who doesn't like the idea of watching some 18 year old girl get pounded? The funny thing is a lot of them probably aren't even 18. Who the hell cares? Who would be able to tell? Just give her some pigtails and a cheerleader outfit and you're good. They'd say 16 if it were legal. Also, this is a very inappropriate question for a 5 year old.
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Why do we say our descriptive words in a particular order? For example: "Big red ball," not "Red big ball."
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There actually is a "correct" order, although most people don't learn it. We often pick it up without realizing it, but that's why certain orders sound "weird" _URL_1_ _URL_0_', "These descriptive words are called adjectives and when multiple adjectives modify a noun, they will be in a [particular order]. This is one of many unconscious rules that native English speakers have in their minds, whether they're aware of it or not. No one ever taught you these rules, you learned them when you were a baby, just by listening to your parents and other people talk. Together, these rules are called syntax and a language's syntax determines how words are put together to make phrases and sentences.
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Why do emergency vehicles sirens in the US also have the strange sounding siren that almost sounds like a bubble or being underwater?
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The thumper? It is a really low tone that deaf people can feel approachingCop here: Are you talking about the "[piercer]" siren? It is easier for people to identify where it's coming from. Most of our cars don't have it, but I 'd generally use it when approaching an intersection.Sometimes the operator might toggle the power so it whoops in a different sequence, is that what you're talking about?
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Why are dogs one of the few animals that form strong attachments to people and bond really well with humans?
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Because dogs have been domesticated over time. Originally dogs wouldn't have been as friendly and attached to humans as the ones we have today. Over time, however, 'dogs' that were more friendly to humans would be more likely to get food from humans and survive . So basically the friendly dogs that attached to humans would get more human sympathy and would be more likely to survive and reproduce than non-friendly dogs. Eventually you end-up with most dogs being very friendly and affectionate towards humans. Additionally, humans have helped to selectively breed dogs which are friendlier and more attached to humans by encouraging the friendly dogs to mate and/or preventing violent/non-friendly dogs from mating. So, once again, over time you end-up with a much greater population of friendly dogs than non-friendly dogs. In summary, a combination of natural selection processes and selective breeding have contributed to the evolution of the dog into a fully domesticated animal that is genetically predisposed to be friendly with and be socially attached to humans.
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If water boils at 212°, then why is there water in the air?
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There is water in a gas form in the air due to a process called evaporation. Evaporation creates water vapour. Evaporation is different to boiling water. When water reaches 212F it turns into steam. There is only so much water that can stay suspended in the air as a gas through evaporation. It will go higher than this level in the event of boiling. When you boil water, you get steam, which will increase the water in the air, to above this level. When this happens the water will start to condense back into liquid water, forming 'mist' which is visible to the eye.
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If Bitcoins are just computer generated, why hasn't some one found a way to just make them without mining?
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Bitcoins aren't generated, they already exist. They are the answers to a set number of very hard and tedious math problems. You don't create new bitcoins. You get access to a bitcoin that already exists when you find the answer to the problem it is hidden behind. That is if no one else got there first and logged it into the network. The only two ways of getting a bitcoin is by solving the problem or just guessing the answer.
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How do earphones know which sounds to play in the right ear and which to play in the left?
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Take a look at this picture of earbuds: _URL_0_ Notice the jack is separated into 3 sections. This is how the stereo sound gets split into right and left. One section carries the signal for the right ear; one section carries the signal for the left ear. The third section is what is called a common wire. The common wire doesn't carry a signal to the earbuds, it's merely the path back to your phone/mp3 player/sound system to complete the electrical circuit. Both the left and right earbuds use this common wire.
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If we can control our breathing manually when we think about it, why can't we control other things manually like our heartbeat?
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But you can control your heart rate. Just because you never learned dosen't mean you can't. There are many stage performers, yoga, martial arts enthusients who have demonstrated the ability to control their heart rate. The quickest that comes to mind is people who train to hold their breath underwater ~ they slow their heart rate to achive the many minutes underwater without brain damage.
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Why do we die instantly when our heart stops? Why don't we asphyxiate from lack of oxygen from blood no longer circulating?
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You don't die instantly; people with a totally stopped heart often die, but it is possible if the heart resumes in a timely manner you'll survive. There's a distinction between alive and conscious, though. A total stop in blood flow will make you pass out really quickly; in fact a sudden decrease in blood flow to the brain can easily cause one to faint even without the heart stopping.
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How bad is car exhaust for you?
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Aside from the carbon monoxide, which just kills you, combustion byproducts are extremely toxic. There are gasses and particles that are inhaled and collect in the lungs and blood. Long term exposure is very bad, which is why cars have so many emissions controls to try to reduce the impact. The older the car, the more harmful stuff is coming out of the exhaust. It's nothing to freak out over, but it's never a good idea to run a car inside a garage.
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How are doctors able to so accurately estimate how much time terminal patients have left to live?
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This isn't biology, it's math. To be specific, it's statistics. Doctors know the percentages, basically. They know that, out of 1,000 patients with a specific diagnosis, all were dead within a year, and the average life expectancy *was* 6 months. So when a *new* patient is diagnosed with the same condition, they'll say "This person has 4-8 months to live, a year at the outside."', "Don't get mixed up in thinking just because a doctor gives a date that it is accurate. That said, mainly they will be looking at A) how fast the disease is progressing i the patient and B) comparing to previous patients with a similar illness in a similar condition.
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How did the diet commonly associated with breakfast remain so much less diverse than that associated with dinner?
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Traditionally, breakfast foods are things that can be made quickly with little or no preparation time -- important because it's the first meal of the day. As a result, they are generally not very complicated dishes. For example, I wouldn't want to prepare a lasagna for breakfast. Bacon, eggs and toast cook much much faster.
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The questions raised by today's XKCD.
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Basically things in a mirror aren't flipped horizontally. The left side is still on the left as the upper side is still on top. If you now try to mention a book/piece of paper/word as an example, I have to disappoint you, because this depends totally on the axis you flip it.
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Why is it that when you drink water your pee become clear and thats a sign that you're hydrated, but when you drink beer you become dehydrated but your pee is still clear?
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Clear urine simply means that you have a lot of water in your urine and the urine is dilute. When you're well hydrated, you pee out excess water and the urine is clear. When you drink alcohol, the alcohol inhibits a hormone that helps the kidneys reabsorb water. As a result, you pee out excess water making the urine clear and you're peeing out more dilute urine than you should. This is what makes you dehydrated when you drink alcohol .
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How do services such as 'Bongo' in the UK know any details about a person, and are they even real?
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From their FAQ: > HOW DOES BONGO WORK? > BONGO works thanks to a number of intelligent human researchers and a very sophisticated software application with a huge database. So officially, they say it's a mixture of human researchers and a software application. Presumably they are collecting info from social media, publications, etc You'd be shocked how much info the average person puts out there. I'm sure they're looking at who you have Liked on facebook and then tracking if that person has Liked your photos and that kind of stuff.information from terms and conditions "we assume that you will only use the service for entertainment purposes" "Frequently our answer is neither correct nor accurate and may in fact be entirely wrong and without any intention on our part, possibly even offensive to you."
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Why is marriage "hard work"?
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Life is hard work. Marriage, or any situation where another person lives with you, complicates things because you can't just think about what is best for you in order to solve all the problems one encounters through life. Someone with a family has many more considerations to take into account when making a decision, and are not the only decision maker. There is much more compromise, and selfish actions usually cannot be taken.
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How do some business make profit out of a huge discount on products?
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They're not losing $1440, they're getting $60 and claiming that you could find other classes that would charge $1500 for similar a similar class. Let's say the company offers a week of one on one training and gives the certification test, vs what's likely to be a set of videos posted online and a test. While you get the certification both ways, the product are likely to be quite different. If one-on-one training is $1,500, they're not wrong in that you can pay that much for a certification class.They aren't losing $1440. That would only be the case if it cost them $1500 per customer. It doesn't. In fact, it doesn't cost them shit because it is a digital course with no live instructor. The only thing that costs them anything was making the course in the first place, and since it's a bullshit "hacker" course it probably didn't cost much either.
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Why old videos always are messed up at the bottom
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It's not the the original recording that's messed up, it's the result of the tracking not being correct when the VCR recording is being played back. Tracking is what syncs the speed of playback with the speed of the recording. When the tracking isn't correct, you get distortion in the image displayed on the screen.
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The new Snapchat privacy policy. How invasive is it really?
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The problem is no one really knows what they plan on doing with this. It could be nothing, it could be horrible. Its the precedent of them saying "we are openly going to do whatever we want with all this" thats concerning
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Why is there a static sound when you unplug earphones from your device?
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When the headphone connector is all the way in, there are three metal contacts that line up with three metal contacts inside the device. As you slide the plug in or pull it out, the contacts touch the wrongs places briefly and cause a momentary short circuit. The short circuit causes the voltage to spike very briefly. Audio signals are just voltages that go up and down in level. So when the voltage spikes, it's literally the same as a really loud part of the music.
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why are u supposed to not ration water but ration food when you are stranded in the desert?
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Because you lose water through sweat, the minimum water intake is a hard minimum. You can go longer without eating because your body can turn to fat stores/muscle mass for energyYou can ration water, but there is a hard minimum required to keep living in that environment and if you go below that you will die.
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Why don't clubs have a 'house set' of high quality drums so bands don't need to carry their own space mongering set?
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Some clubs do. The problem is that these sets get a lot of use and hardly any maintenance, and so sound crap. It doesn't help that they're usually cheap to begin with. Whenever I've used a house set it's always been rubbish. Oh, and some drummers like crazy set ups with 18 cymbals and 4,231 toms and 3 kick drums or something. Obviously they can't use the house set. Also, drummers like differently set up drums, in terms of how they tighten the heads, and sizes of the drums , how the stick rebounds, the feel of the hi-hat, the feel of the kick So many variables are in play that a house set - even a good quality one - is unlikely to work for most drummers.Because instruments are expensive, require expertise to upkeep and musicians generally prefer to use their own stuffInstruments are expensive, require maintenance, and learning the nuances of a drum set, just like any instrument takes time and practice. A drummer will always play better on their set than they will on some random set they borrow. That random set is also likely not going to be tuned exactly the same as their drum heads, and may not have all the same peripherals .Basically, owners aren't musicians and those who are hardly have the money for a good set, or they don't care.Moreover, it's difficult to find a silver bullet drum set which can cover the whole range of musical genres .
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Why cant we order and buy new cars completely online, but are instead required to go to the dealership?
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Tesla cars can be bought online! Otherwise due to state laws and stuff for regular cars you must go to a dealership. Personally the best way that secured car purchases with me is go to Edmunds Tmv, get that price with the specs you priced and go to a dealership.'if they don't even match it or come close walk out and go to another one. Every time they say wait and i get the TMV price", 'This story on planet money does a really good job of ELI5 on this question: _URL_0_
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Cannabinoid receptors, CB1 and CB2, as novel targets for inhibition of non-small cell lung cancer growth and metastasis.
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There are these receptors in lung cells called CB1 and CB2. They are like Lego blocks, any block with the right shape will lock onto them. It turns out than some non-small cell lung cancer cells have this same receptor. We have plants, you know the one I suspect because you are asking, that happen to make compounds with the right shape to fit into these receptors. This means we could make a drug that we could splice onto that molecule from the plant and put into the patient's lung. A drug that didn't harm the normal cells and damaged the NSCLC cells would have a therapeutic effect. The compounds they experimented with "inhibited phosphorylation of AKT", which is a chemical process that needs to work for cells to stay alive, in the cancer cells. It's an interesting approach, because usually there are two steps, find a cheap compound that will lock on + make a drug. These receptors let scientists skip the first step using that plant you're thinking of.
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How did early explorers and cartographers accurately create their maps with the lack of tools we use today?
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They had a very varied and effective arsenal of tools and mathematical knowledge to increase the accuracy of their depictions, however like you say, by todays standards they are somewhat poor. To work out lengths they would use ropes or wheels of predetermined lengths, and count how many ropes are needed or wheel revolutions, between two points. Further to this they used the mathematical truths of Euclidean geometry to work out long distances, and heights, between points. For example, you can work out the length of a long distance by using a telescope attached to a compass and trigonometry. By placing the telescope on one of the points, then facing it toward the other point, then measuring the angle between due north and the telescope direction. You can the repeat this for the other point, and calculate their distances using both angles. Heights between two points can also be obtained from this method, but instead of using a compass, using a protractor perpendicular to the telescope, as long as the distance is already know. This is essentially primitive triangulation, albeit fairly innacurate. Geometry can also be used for scaling purposes, getting accurate proportions, and angles on your artistic representations of the landscape. By utilising these methods, they were able to take down data for, and draw, maps of the places they had been to. Essentially it all boiled down to mathematics. They know the maths, and their instruments are accurate enough for the job. Take a look at [this] picture of a cartographers arsenal..
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With more People and less jobs, how will future generations all find employment?
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More people means more demand means more production and civil service jobs. It's always been this way. If one task is eventually automated, hopefully the excess workforce will be put to performing more complex tasks.
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Why are crooked teeth considered so unattractive in the US?
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Attractiveness is generally determined by how symmetrical someone's features are. Crooked teeth destroy symmetry.Dental work in the US is relatively attainable, so the average American has pretty straight will aligned teeth, at least where it is concerned with the front teeth. While not a hard and fast rule by any means it is generally a decent indicator that a person without straight teeth either lacks the means to get appropriate dental care or lacks drive to take proper care of him/her self. Either of these things are not highlights when it comes to attraction to say the least.
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what makes the light from stars lose intensity? Since they travel trough a vacuum and all that.
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As light moves away from the star it has to occupy a larger area. Imagine you took a picture of a star, and could see all of the photons currently emerging from the surface of that star. Like a photon balloon. Then you wait one second and take a second picture. All of those photons are now one light-second away from the surface of the star. It's the same amount of photons but they are covering a larger area . When you have the same amount of light being spread over a larger and larger area, the light at any given area is going to appear dimmer and dimmer as the light is spread out more and more.
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How do we know that conservation of energy is a law? How have we proved that energy cannot be created or destroyed?
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A scientific law is simply a statement that holds up under repeated experimentation. The law of conservation of energy has held up with every experiment ever thrown at it across all parts of the universe we can observe. It is verifiable with math, measurements, and tests. Is it *possible* that it's wrong ? Sure, but just try to prove it.
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How does ISIS still exist and stay so strong although many nations have sent so much armed forces to hunt them down?
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Much of the action against ISIS has taken the form of air strikes, special forces actions, and more conventional actions. To be effective against a guerrilla force, you need to have a large number of troops constantly occupying their power base areas to prevent them from moving and resupplying, while building good will with the local populace to prevent the guerrillas from recruiting.It's important to note that so far we have only really been fighting ISIS from the air. That alone will never suffice in breaking up the Islamic State. What is needed is a coordinated ground offensive. Syria and Iraq, the two countries whose territories are being overrun by these extremists, have thus far not been able to field a size-able counter offensive. Needless to say, the Syrian army has its hands full fighting more than just ISIS, in a civil war that has been raging on for many years now. This while the Iraqi army was in total disarray and has only recently been able to get its act together and is now for the very first time going on the offensive in an attempt to take back the city of Tikrit. Then there's also the Kurdish forces, but until now they have been primarily preoccupied with liberating the lands that belong to the Kurdish people and don't seem at all inclined to take the fight any farther. Additionally, ISIS has quite a significant amount of troops at its disposal, and has the money and military equipment it needs to keep this army afloat, even in the face of overwhelming US air superiority and what is now essentially three front warfare. None of the forces fighting ISIS on the ground have the needed capacity to win a ground war at this point, even if they had the desire to.
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why has Africa fallen behind the rest of the world's exonomies?
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Because it has always been behind . It's mostly due to it's location and climate. Sub-Saharan Africa just was too far from from the trade routes of the world and didn't allow for large populations . When the Europeans started colonizing the Americas they decided that they didn't like the climate and the diseases in Africa and just decided to be satisfied with controlling the local populace as opposed to replacing it . The type of colonialism the Europeans practiced in many places didn't help and the randomly drawn borders that ignored historic ties/tribes/whatever did their share to causing decades of near constant warfare. So basically Africa has always been in a tough spot, and hasn't really had much happen in its favour, ever. And these days Western companies still try to use the weak political systems to extract most of the ressources from the continent instead of creating any kind of lasting economy. PS: Because the above text might sound somewhat biased: am European myself, no ties to Africa outside of history lessons ;)
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What is the point of having an interim position?
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Some positions need to be filled immediately to continue operating the business **but** they also want to have an in-depth search to find the absolute best person for the job. The solution is to find somebody you know is good but doesn't really want to take the job for a long period of time to fill the vacancy.
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Why are Mosquitos attracted to colour and what purpose does it have?
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Animals are more or less going to be a color with blue incorporated into it subtly even if we as humans can't see it they can. It simply acts to attract them to veins if visible or just a body in general.
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Why does love hurt ?
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It's because you vest a degree of emotional trust and attachment to someone. Not only do you lose your love, but maybe your best friend too.That is a good question and a good guess. Could be something hormon related. Either way It really sucks
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Could I get a credit card and buy cheap items 1-3 times a month to build credit?
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Yes, this is what you do when you have no credit. Don't buy things you can't pay off right now though.
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How does autofocus work in digital cameras? (particularly DSLRs)
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When not in live view mode, DSLRs and film SLRs use phase detection autofocus, which uses optical triangulation to determine the distance between the camera focal plane and the focus target. See [this page] from Stanford for further details and a demonstration applet. Most other types of cameras, including cell phones, P & S, mirrorless cameras, and DSLR cameras in live view mode, use [contrast detection autofocus]. CDAF works by measuring the level of contrast at the autofocus point and adjusting the lens position until the highest level of contrast is found. PDAF is almost always faster than CDAF.
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Why is it that new GPU's have to increase in size to become more powerful while CPU's have always stayed the same size?
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It is partly that GPUs create significantly more heat than CPUs. Most of the room a GPU takes up is fans or copper heat sinks.It's not so much that the GPU itself increases in size, but the cooling and power requirements increase, so the devices the GPU is attached to get larger. The same thing happens with CPUs, except the power requirements are satisfied through the mainboard while the cooling hardware tends to get bigger.
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If I eat a lot of sugar In one sitting does my body store all of the sugar for later?
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Are you the usual, considered normal? Or are you a Type I or a type II diabetic? Or do you not know? Normal response: Your GI tract starts absorbing the sugar. You blood glucose level starts rising. Actually this happens in all cases. Further normal response. Your pancreatic cells concerned with this respond to the high levels of glucose in your blood. They start releasing insulin. Type I and Type II diabetics do not do this. The insulin tells your body cells to take in the glucose. This lowers your blood glucose level. Diabetics can give themselves an injection, or be wearing a machine which increases a background level of insulin. Unknown diabetics get high blood glucose and thirsty. Hypoglycemics may actually get a much lower glucose level due to increased insulin. They may feel light headed and almost faint. How much sugar are you taking in? Spoonfuls? Cups? Everything is poisonous at some level. Do not challenge your body with the hidden question, will this kill me?Just to add to the other response, there are osmoreceptors that play a part in regulating blood glucose levels. There is a point where your body will no longer store glucose as glycogen, use it to store fatty acids, and excess glucose will be filtered out by the kidneys and end up in your urine.
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Why do things that are powerwashed, say a wood house, not splinter and break?
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Older wood will often splinter and break which is why I can't power wash my old deck but most wood you can buy is pressure treated and this allows it to withstand the ingres of water and it's pretty durable.
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Why is it that dreams are so weird?
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We really don't know yet! There hasn't been all that much research into dreams, compared to a lot of other areas of science. Dreams seem to defy explanation and logic, and are very subjective, so it's tough to study them. We do know that when you're asleep, certain parts of your brain turn on and off. Mostly, they turn off, and lots of different chemicals are released. For some reason that we don't completely understand , your brain enters a state called REM, or Rapid Eye Movement sleep, where it's very active. In fact, your brain waves look almost the same as when you are awake! But, in this stage you're not taking in any information from your senses. All that activity is coming from your brain. We know that REM is very important. It seems to be a time when your brain consolidates memories, making them stronger and easier to access, and connecting them with other memories. It might be that while it's consolidating memories, it's activating the different areas of your brain that you used during the day. But since a lot of your brain is turned off while you're sleeping, those memories might get interpreted in weird and jumbled-up ways, creating strange dreams. There are also plenty of other possible explanations. It's an area that needs a lot more research!", 'Part of it is confirmation bias. You only remember the weird dreams and the not so weird dreams are just forgotten about.
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why the american corn taste different from middle eastern corn or Asian one?
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They differ in species, soil composition, environment, exposure to the sun. These all could effect the taste.There are many different variations of corn. In Korea , supermarkets usually have 2 or 3 different corns in the vegetable section . In the US, it's usually the same sweet corn, unless you have a large farmers' market.the corn can only build itself from whatever nutrients it can obtain. if you plant something in another soil that has different properties these properties will change the plant. after a few generations of this your plant will evolve to better cope with the changed soil conditions , resulting in "different" corn.
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Why does urine feel hot after a workout?
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Your body heats up while working out, and your pee is inside of you initially. Your skin cools down relatively quickly, but your internal organs stay warm for a while. On top of that, your heat-sensing nerves sense the change in heat, meaning if you stay in a warm environment for a while, you'll get used to it eventually and not notice it anymore. So if you pee after you work out, it's about the same temperature of your internals, which are warmer than your skin. Also, please don't tell me how you discovered this
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Why are so many seedless fruits available such as watermelon, but not avocados?
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*Most* fruits are not available seedless. In the example of watermelons, they have simply been bred to have very small, immature seeds. If you take an avocado and make its seed smaller, it'll still be a huge pit.
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When DJ's 'scratch', what exactly are they doing? How do they turn that into a song?
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A vinyl record is one long groove etched into a disc. The different shapes of the groove vibrate the needle to make sounds as the record turns. You can stop the record at a specific point where there is a particular sound, such as a snare drum. Then if you move it back and forth while the needle is over that snare portion of the groove, it will create a cool scratching sound. You are using a sound that's on the record to create a unique vibration with your hand movements that plays through the needle. For electronic devices like cd players and computers, they are imitating this process.
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Why does water evaporate faster outdoors than indoors?
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Yes, temperature. But also other factors, such as humidity and wind. _URL_0_ There are definitely less wind indoor, so that's a big factor. If you have a puddle in a small room, as the puddle evaporate, the room gets more humid, thus slowing slowing down the evaporation. In the outdoors, the humidity quickly disperses. More importantly is surface area. A puddle and water in a glass, of the same volume, the puddle with evaporate faster, even when both are outdoors, or both are indoors.e
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why do you have to "eject" USB drives before removing them from your computer?
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I'm fairly sure this gets asked a lot, so I'm going with Short Answer: your operating system doesn't always write changes to files right away. This is intentional and for performance reasons. Telling the computer to eject a device forces any pending changes to be written right now. Basically, it's a precaution.IT is to ensure that no data is being transferred onto or from the USB. If there is, there is a small risk that it will corrupt the device.
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How can someone incapable of speaking with a terrible stutter turn around and sing perfectly?
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The parts of the brain that control speech are different than the ones that control singing.Stuttering is often purely psychological. Many people who stutter only do so when stressed, or are capable of speaking clearly when something gets them sufficiently emotional, distracted, or whatever to temporarily get them past the psychological anxiety or whatever's causing them to stutter. For some, singing is an activity which allows them to change their speaking patterns or get in a different frame of mind, thereby allowing them to not stutter while singing.
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Where does our head voice come from if it doesn't sound like our actual voice?
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The psychological theory of [bicameralism] is controversial, but interesting nonetheless. It basically states that humans developed consciousness with an intermediary step -- bicameralism. This involved two parts of the brain communicating, one is talking to the other and telling it what to do. The author states that this is where the concept of "god" came from, as early humans were literally hearing another voice giving them commands. Over time this evolved into true consciousness with an internal dialogue. Some of these themes are being addressed in HBO's new series Westworld.Unfortunately, there hasn't been a lot of research into the processes regarding the development and use of one's internal voice. Like most of the brain's functions, these processes are subject to significant variance due to genetics and environmental factors. One of the things that is becoming increasingly clear is that one's internal monologue can vary wildly from someone else's. For example, some people don't have an inner voice at all. Some people think only in pictures instead of words. Some people have entire conversations with themselves using complete sentences with correct grammar while others will only occasionally think in short, broken sentences. Personally, my inner voice sounds exactly like my speaking voice. But that doesn't mean that is true for everyone else. This phenomenon is most closely associated with an area of the brain called Broca's area. Its functions include speech production and comprehension. This suggests the phenomenon of internal monologue is closely associated with actual speech. Damage to this area can cause drastic alterations in how people speak and process language, affecting both their inner voice and actual speech.
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what happens if someone eats enough protein and some other nutrients but not enough calories?
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His reserves will be used to make up the difference. Initially this will be bloodsugar, next any excess body fat, and then his muscles will be converted to energy.
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ELI: What determines which emergency vehicles arrive when a call comes in (traffic accident, medical incident, etc)?
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A lot of times they just send all of them if an emergency call comes in.It depends on the jurisdiction. In our town of a 100,00, if a medical call comes in, a fire truck with EMTs/Paramedics responds automatically since there is only one ambulance station in town and the city limits stretch for some 26 miles. A police squad usually is also dispatched depending on the nature of the emergency. In the County, a very large one, first responders are dispatched along with a sheriff's patrol. All traffic accidents call for police, fire and ambulance which can be cancelled by the first arriving unit. Fire calls for a building fire call for the same response. Fire calls involving, for example, a car fire with no one in the car, call for one fire pumper and possibly a police squad if available. Incomplete calls are handled according to the initial call for help; domestic abuse, smoke in a building, possible car crash, man down, etc.
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If I dug a hole from the north pole to the south pole, would I fall halfway and then fly upwards for the second half?
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If you're digging the hole, there'd be no fall, since you'd already be down there Just sayin. ", 'With no air resistance, you would forever fall back and forth between both holes. With air resistance, you would slow down and eventually just float in the middle', "Assuming you could dig the hole, and it was a perfect vacuum. Then if you fell in, you'd be accelerating all the way down. Once you got to the middle, you'd fly past is and start decelerating. You'd eventual make it all the way back to the surface on the other side, where you would then fall back. If you ignore all other forces then you wouldn't settle in the middle like everyone else is saying. You'd oscillate between the two holes indefinitely. You can think of this with the energy principle. Before you fall in, you have only potential energy from gravity. When you reach the middle, all your potential energy has converted to kinetic energy. Then it's all potential again when you reach the other side.
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What is the difference between Apache Hadoop, Apache Spark, Apache HBase, and Apache Hive?
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Forgive me if anything gets a little vague, I'm not an expert & have only looked at this stuff in passing. Hadoop is the big dog core project. It handles the low-level bits about distributed data storage & data processing . On top of that base system, there's a *ton* of other tools that have been built. Hive is one of those tools. It basically gives you a database that's built on top of HDFS & MapReduce that you can query with SQL. Since it's intended to be a data warehousing system, it's more for collecting & querying "dead" data than things that would change frequently. HBase gives you a non-relational key-value system built on top of HDFS. It's more for operating on huge data sets that you need to continually update. Spark is a largely separate thing, while it works on large distributed data sets, it's based around a different model than MapReduce. Apparently, it's faster on some types of data. Using HDFS for the back-end is an option but not required. Another tool I see mentioned a fair bit is Apache Pig. It's some sort of super high level language for writing distributed computing jobs that can then then be run on a Hadoop or a Why so many different things? A lot of people started developing shit for their own use & turned the projects over to the Apache Foundation. As long as they have active users & developers, they can stay. TL;DR - Hadoop & Spark are core frameworks. HBase & Hive are higher level tools built on top of that.
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The average bullet travels at 1700mph. So if you were to travel at 1700mph and simultaneously fire a bullet. What would happen?
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If you were to fire it forward, from the point of view of someone stood on the ground, the bullet would be now be travelling at 3400MPH. If you were to fire it backwards, the speed would cancel out and to someone stationary the bullet would drop harmlessly to the ground like a stone. **EDIT** [Relevant Mythbusters experiment]
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In popular TV Show Boston Legal, why do the lawyers from Crane,Pool and Schmidt always give their closing the last(2nd)?
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Artistic license. The same goes for some shows/movies when the lawyer in the middle of cross examination suddenly stops questioning and makes an argument to the jury. As an attorney for 20+ years, I've learned to suspend disbelief and grant a certain amount of artistic license.
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Why are most electronic devices that require 2 batteries set up so that the batteries face in opposite directions?
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depends on if the battery works in parallel or series. most electronics batteries work in series. so you need the negative end of one to connect to the positive end of another. so it's easier and requires less wiring to have them face in opposite directions.
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What's the difference between grey and gray? When should I use which? I've wondered for years.
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Usually, "grey" is the British/Commonwealth spelling , while "gray" is the American spelling. I remember it by grey has an "e" for English and gray has an "a" for American.Go with 'grey' it will save you $5 every time. _URL_0_
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Exactly what training does a dog so in order to became a service dog? What sets them apart from other dogs?
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Basically the desired traits of service dogs are good temperament, trainability, good health and physical structure. Hence why labs, golden retrievers and German Shepherds are the most common service dogs you will see. Any dog can be trained yes but not all breeds have all the desired traits. Imagine a chuiauia trying to alert your family member that you have had a seizure. 'Oh there goes that fucking yapping yap yap again'. As for your other questions, the training of the dogs all depends on exactly what they are being used for, whether it be a 'seeing' dog or one that can detect seizures. As for the typo, I really can't help you there sorry. You will have to live with that for the rest of your life :(
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How can there be negative decibels?
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It's not that simple, but there's a part of it that's actually very very simple. Sometimes we deal with extremely large numbers: millions, billions, trillions of billions. That gets tiresome, so a clever guy worked out how to make the numbers smaller, while still letting them be just as big. He invented the logarithm. Using the logarith, you just count how many zeroes are on a number, and then you use that, to say how large the number is. 10 has one zero, so log = 1 100 has two zeroes, so log = 2 10000000000000 has thirteen zeroes, so log = 13. Pretty simple, right? But what about smaller numbers? 1 has no zeroes, so log = 0 0,1 has zeroes, but they're on the wrong side, so we make them negative. log = -1 log=-7 So that's how you can have negative decibels - there's not negative sound, but there's just very little, and the logarithm makes it appear as a negative number, even though it's positive.
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behind the inside of a belly button?
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The blood vessels and urachus atrophy and become different rudimentary, ligament-like attachments. They don't serve any function in an adult. In the fetus, the urachus connected to the bladder, the two umbilical arteries connected to the aorta, and the umbilical vein connected to the liver. Fun fact: if the urachus fails to atrophy, a baby can leak urine out its bellybutton. These are the names of the three rudimentary structures in an adult human:_URL_2_ _URL_1_ _URL_0_
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