context stringlengths 545 71.9k | questionsrc stringlengths 16 10.2k | question stringlengths 11 563 |
|---|---|---|
a couple of videos ago , we saw that in classic c3 photosynthesis and once again , it 's called c3 because the first time that carbon dioxide ( co2 ) is fixed , it 's fixed into a 3-carbon molecule . but we saw the problem with c3 photosynthesis is that the enzyme that does the carbon fixation , it can also react with ... | and what desert plants , or many desert plants , have evolved to do , essentially does photosynthesis , but instead of fixing the carbon in outer cells and then pushing it in to inner cells and then performing the calvin cycle , instead of outer and inner cells , they do it in the nighttime and in the daytime . so , in... | do cam plants have any adaptations to prevent oxygem from inhibiting the dark reactions ? |
a couple of videos ago , we saw that in classic c3 photosynthesis and once again , it 's called c3 because the first time that carbon dioxide ( co2 ) is fixed , it 's fixed into a 3-carbon molecule . but we saw the problem with c3 photosynthesis is that the enzyme that does the carbon fixation , it can also react with ... | and what desert plants , or many desert plants , have evolved to do , essentially does photosynthesis , but instead of fixing the carbon in outer cells and then pushing it in to inner cells and then performing the calvin cycle , instead of outer and inner cells , they do it in the nighttime and in the daytime . so , in... | if cam plants are a subset of c-4 plants then why are they doing regular calvin cycling with rubisco ? |
a couple of videos ago , we saw that in classic c3 photosynthesis and once again , it 's called c3 because the first time that carbon dioxide ( co2 ) is fixed , it 's fixed into a 3-carbon molecule . but we saw the problem with c3 photosynthesis is that the enzyme that does the carbon fixation , it can also react with ... | and what they do is , at night they keep their stomata open . and they perform , and they 're able to fix - and everything occurs in the mesophyll cells and the cam cells , in the cam plants . so at night time , when they 're not afraid of losing water - let 's say this is a mesophyll cell right here - my stomata is op... | does cam plants have both mesophyll and bundle sheath cells or just solely mesophyll cells ? |
a couple of videos ago , we saw that in classic c3 photosynthesis and once again , it 's called c3 because the first time that carbon dioxide ( co2 ) is fixed , it 's fixed into a 3-carbon molecule . but we saw the problem with c3 photosynthesis is that the enzyme that does the carbon fixation , it can also react with ... | well , it can perform photosynthesis in that very same cell . because it stored up all of this malate at night . and so , now the malate can be pumped out of the vacuoles into the stroma of our chloroplast . | where is the malate stored during the night for cam plants ? |
a couple of videos ago , we saw that in classic c3 photosynthesis and once again , it 's called c3 because the first time that carbon dioxide ( co2 ) is fixed , it 's fixed into a 3-carbon molecule . but we saw the problem with c3 photosynthesis is that the enzyme that does the carbon fixation , it can also react with ... | and these are all very , very efficient sugar producers . because they do n't have to worry too much about photorespiration . now some plants have a slightly different problem . | when a seed is planted to grow a tree should n't it take a lot more the these steps to grow a tree ? |
a couple of videos ago , we saw that in classic c3 photosynthesis and once again , it 's called c3 because the first time that carbon dioxide ( co2 ) is fixed , it 's fixed into a 3-carbon molecule . but we saw the problem with c3 photosynthesis is that the enzyme that does the carbon fixation , it can also react with ... | and then they take the carbon dioxide off the malate , and this is where they actually perform the calvin cycle . and even though you do have your rubisco still there , your rubisco is n't going to have - the photorespiration is not going to occur . because it only has access to carbon dioxide . | will cacti that live in moderate temperatures ( house plants ) still work this way even though they do n't have to worry about water loss ? |
a couple of videos ago , we saw that in classic c3 photosynthesis and once again , it 's called c3 because the first time that carbon dioxide ( co2 ) is fixed , it 's fixed into a 3-carbon molecule . but we saw the problem with c3 photosynthesis is that the enzyme that does the carbon fixation , it can also react with ... | and what desert plants , or many desert plants , have evolved to do , essentially does photosynthesis , but instead of fixing the carbon in outer cells and then pushing it in to inner cells and then performing the calvin cycle , instead of outer and inner cells , they do it in the nighttime and in the daytime . so , in... | which is the ratio between co2 and o2 produced by plants ? |
a couple of videos ago , we saw that in classic c3 photosynthesis and once again , it 's called c3 because the first time that carbon dioxide ( co2 ) is fixed , it 's fixed into a 3-carbon molecule . but we saw the problem with c3 photosynthesis is that the enzyme that does the carbon fixation , it can also react with ... | i do n't want all my water to vaporise out of these holes in my leaves . but at the same time , the problem is photosynthesis can only occur during the daytime . and that includes the dark reactions . | why dose photosynthesis only happen in the daytime ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | and then we talked about things that would have a tough time . and that 's charged particles because charged particles , and we have some ions right over here , a sodium ion , a potassium ion . even though these are fairly small they 're going to interact a lot with the phosphate heads right over here with this charge ... | if the ion are positively charged like the na+ ( sodium ) ion , why and how did it managed to get itself attracted and move through the channel protein instead of attaching itself to negatively charged hydrophilic head of cellular membrane ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | my phospholipid bilayer here , almost done . and then a carrier protein , and the way i 'm gon na draw it is n't exactly how a carrier protein would actually look , but it will hopefully give you the right idea . so maybe it 's like this , maybe it 's like this . | why does n't the carrier protein require atp to move , what makes move passively ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | which you can see that 's actually key to what happens in nerve cells , that we 'll see in future videos . now another type of facilitated diffusion can occur through what we call carrier proteins , `` carrier proteins '' . and i wan na be clear i 'm gon na talk about carrier proteins but people are still studying exac... | if water moves into the cell through aquaporins , small transmembrane proteins , then why is movement of water not considered facilitated diffusion ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | `` channel , channel , channel proteins . '' `` channel proteins . '' and an example of a channel protein might be this one right over here . | can virus enter through transport proteins on cell membrane ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | so let me write that down . `` facilitated , `` facilitated diffusion '' so last video was just straight up diffusion , now we 're gon na talk about facilitating it . so what do you think , if you were trying to engineer something , that would make it easy for these types of molecules , either a water molecule or an io... | what are the three factors that can affect the rate of diffusion ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | `` aqua , aqua porin '' . which is just a channel protein for water . and so you see it has this hole on top . | whats the difference between a channel protein and carrier protein ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | `` channel , channel , channel proteins . '' `` channel proteins . '' and an example of a channel protein might be this one right over here . | what is the space between the proteins in an integral protein known as ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | which you can see that 's actually key to what happens in nerve cells , that we 'll see in future videos . now another type of facilitated diffusion can occur through what we call carrier proteins , `` carrier proteins '' . and i wan na be clear i 'm gon na talk about carrier proteins but people are still studying exac... | is there any energy used in facilitated diffusion done by carrier protein ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | - in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . | what type of membrane protein is responsible for passive diffusion ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | - in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | o2 is non polar and hydrophilic love water kinda polar , is n't it ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | so it could kinda flip around . let me get the other tool . it could , whoops , really having trouble with my tools today . | my question is how co2 get through to hydrophilic terminal ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | which you can see that 's actually key to what happens in nerve cells , that we 'll see in future videos . now another type of facilitated diffusion can occur through what we call carrier proteins , `` carrier proteins '' . and i wan na be clear i 'm gon na talk about carrier proteins but people are still studying exac... | in facilitated diffusion transport proteins are present in the ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | `` aqua , aqua porin '' . which is just a channel protein for water . and so you see it has this hole on top . | whats the difference between a channel protein and carrier protein ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | which you can see that 's actually key to what happens in nerve cells , that we 'll see in future videos . now another type of facilitated diffusion can occur through what we call carrier proteins , `` carrier proteins '' . and i wan na be clear i 'm gon na talk about carrier proteins but people are still studying exac... | does the amount of molecules waiting to be transported by carrier proteins influenciate the speed of the transport ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | so let me write that down . `` facilitated , `` facilitated diffusion '' so last video was just straight up diffusion , now we 're gon na talk about facilitating it . so what do you think , if you were trying to engineer something , that would make it easy for these types of molecules , either a water molecule or an io... | why do we say that facilitated diffusion is very specific ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | and so you see it has this hole on top . and let 's say you had more water molecules outside the cell than you have inside the cell . and you wanted to move down its concentration gradient , or maybe you have a higher concentration of solute here , and so we 're going to have osmosis occurring . | and how does a cell select substances for uptake ? |
- in the first video on passive transport we talked about the most passive of passive transports and that is simple diffusion . and we talked about how small non-charged , non-polar molecules would actually have the easiest time . things like carbon dioxide or molecular oxygen , would have the easiest time diffusing th... | and so you see it has this hole on top . and let 's say you had more water molecules outside the cell than you have inside the cell . and you wanted to move down its concentration gradient , or maybe you have a higher concentration of solute here , and so we 're going to have osmosis occurring . | would the solute move to the inside of the cell , or would the water exit the cell ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . | 7 sal mentions that stewart has a negative amount of money in his account ; how is that possible ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | and so how much is going to have in his bank account ? he started owing $ 15.08 , and then he 's going to add $ 526.90 . so one way to visualize it is , if you think about it on a number line , if this is 0 right over here , he 's going to start off at negative $ 15.08 . | ca n't i just subtract 15.08 from 100.00 , add 426.90 , and get the same answer ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . | 7 sal mentions that stewart has a negative amount of money in his account ; how is that possible ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | he started owing $ 15.08 , and then he 's going to add $ 526.90 . so one way to visualize it is , if you think about it on a number line , if this is 0 right over here , he 's going to start off at negative $ 15.08 . but then he 's going to add $ 526 . | how is zero a number ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . | stewart has a negative amount of money in his account ; how is that possible ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | and then to that , he adds $ 426.90 and $ 100 . so that 's $ 526.90 . and so how much is going to have in his bank account ? | where did the 526.90 come from 2 ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | and that 's going to be $ 526.90 minus $ 15.08 . so that 's going to be , and we can even just rewrite this so it actually looks exactly like that . that 's exactly the same thing as $ 526.90 minus -- adding a negative is the same thing as subtracting a positive -- minus $ 15.08 . | how is that even possible ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | how much was in stewart 's checking account after the second deposit , so after both of these deposits right over here . so he starts off with a negative balance . so a negative balance means that he 's overdrawn his checking account . | will it still be a negative number if all the numbers added to the negative number is less than zero ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | he started owing $ 15.08 , and then he 's going to add $ 526.90 . so one way to visualize it is , if you think about it on a number line , if this is 0 right over here , he 's going to start off at negative $ 15.08 . but then he 's going to add $ 526 . | how do you find number opposites ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | so a negative balance means that he 's overdrawn his checking account . he actually owes the bank money now . luckily , he 's now going to put some money in his bank account . | how can you have to owe - numbers to a bank ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | how much was in stewart 's checking account after the second deposit , so after both of these deposits right over here . so he starts off with a negative balance . so a negative balance means that he 's overdrawn his checking account . | why do a positive and a negative make a negative ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . | how come wen you subtract two negatives , the subtraction sign changes to a addition sign ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | how much was in stewart 's checking account after the second deposit , so after both of these deposits right over here . so he starts off with a negative balance . so a negative balance means that he 's overdrawn his checking account . he actually owes the bank money now . | how can you have a negative balance on your account ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | 8 minus 0 is 8 . we have our decimal . 6 minus 5 is 1 . | what is the numbers behind the decimal called ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . | when p-d=b is not an answer ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | he started owing $ 15.08 , and then he 's going to add $ 526.90 . so one way to visualize it is , if you think about it on a number line , if this is 0 right over here , he 's going to start off at negative $ 15.08 . but then he 's going to add $ 526 . | is there any other methods than just a number line ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | he started owing $ 15.08 , and then he 's going to add $ 526.90 . so one way to visualize it is , if you think about it on a number line , if this is 0 right over here , he 's going to start off at negative $ 15.08 . but then he 's going to add $ 526 . | do you have to draw a number line for these kind of questions ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . | the boiling point of farenheight is 32 degrees farenheit how is this corelating with celcius ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | so he starts off with a negative balance . so a negative balance means that he 's overdrawn his checking account . he actually owes the bank money now . luckily , he 's now going to put some money in his bank account . so he 'll actually have a positive balance in his checking account . | is it possible ( 7 ) to have a negative amount of money in your account ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | he started owing $ 15.08 , and then he 's going to add $ 526.90 . so one way to visualize it is , if you think about it on a number line , if this is 0 right over here , he 's going to start off at negative $ 15.08 . but then he 's going to add $ 526 . | is there any way to add and subtract negative numbers without using a number line ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | he started owing $ 15.08 , and then he 's going to add $ 526.90 . so one way to visualize it is , if you think about it on a number line , if this is 0 right over here , he 's going to start off at negative $ 15.08 . but then he 's going to add $ 526 . | why people invented the number line ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | so 10 minus 8 is 2 . 8 minus 0 is 8 . we have our decimal . | is 0 a positive or negitive number ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | we have our decimal . 6 minus 5 is 1 . 2 minus 1 is 1 . | how is the moon large enough to block the sun ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | so one way to visualize it is , if you think about it on a number line , if this is 0 right over here , he 's going to start off at negative $ 15.08 . but then he 's going to add $ 526 . so this right over here , this is $ 15.08 to the left . | how do you subtract and add negative and positive numbers with 2 numbers to add ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . | how can the moon block the sun ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | now , everything up here is larger than everything there . so 10 minus 8 is 2 . 8 minus 0 is 8 . | why do decimals have to have different sign 's ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . | why is math so important for us ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | so a negative balance means that he 's overdrawn his checking account . he actually owes the bank money now . luckily , he 's now going to put some money in his bank account . | how is there negatives in money ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | so 10 minus 8 is 2 . 8 minus 0 is 8 . we have our decimal . | is 0 a positive or negitive number ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . | will there be food provided ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . | what is the meaning of rational ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | how much was in stewart 's checking account after the second deposit , so after both of these deposits right over here . so he starts off with a negative balance . so a negative balance means that he 's overdrawn his checking account . he actually owes the bank money now . luckily , he 's now going to put some money in... | how do u have a negative amount of money ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | we have our decimal . 6 minus 5 is 1 . 2 minus 1 is 1 . | * why does pi times 5 equal cow ? |
at the beginning of the week , stewart 's checking account had a balance of negative $ 15.08 . on monday morning , he deposited a check for $ 426.90 . on tuesday morning , he deposited another check for $ 100 . how much was in stewart 's checking account after the second deposit , so after both of these deposits right ... | that 's exactly the same thing as $ 526.90 minus -- adding a negative is the same thing as subtracting a positive -- minus $ 15.08 . and this is -- i will do this in another color -- $ 526.90 minus $ 15.08 . let 's see , 0 is less than 8 . | what is the point of underlining in the same color as the writing ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | if the carbon14 used to date an organism , let 's say an elephant is derived mainly from the plants ingested , and the elephant is dated by comparing it 's ratio of carbon atoms to another elephant 's ratio of carbon atoms , how do you account for the amount of plants the elephant actually ate ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so i just said while you 're living you have kind of straight-up carbon-14 . and carbon-14 is constantly doing this decay thing . but what 's interesting is as soon as you die and you 're not ingesting anymore plants , or breathing from the atmosphere if you are a plant , or fixing from the atmosphere . | how accurately in time can one measure the decay of c-14 ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | is it possible for a bone to have no carbon 14 at all ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | how do we know that atmospheric changes over the last thousands of years did n't affect the ratio of carbon 14 to carbon 12 ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | it gets put into plants , and then it gets put into the things that eat the plants . so that could be us . now why is this even interesting ? | if there were some changes in heat or radiation or magnetism of the earth during the course of thousands of years , then could it have affected the carbon ratio , thus giving us wrong predictions ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | once a plant dies , it 's no longer taking in carbon dioxide from the atmosphere and turning it into new tissue . the carbon-14 in that tissue gets frozen . and this carbon-14 does this decay at a specific rate . | `` every living thing has a certain proportion of carbon 14 in their tissue '' ... how do we know what that proportion is ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so kind of this process reverses . so it 'll decay back into nitrogen-14 , and in beta decay you emit an electron and an electron anti-neutrino . i wo n't go into the details of that . | what is an electron anti-neutrino sal talks about ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | and we talk about in other videos . this is called a half life . and i want to be clear here . | why is carbon14 's half-life so long ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so kind of this process reverses . so it 'll decay back into nitrogen-14 , and in beta decay you emit an electron and an electron anti-neutrino . i wo n't go into the details of that . | is it possibly to 'induce ' an immediate decay ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | what if we found a bone with 0 % carbon 14 ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | well , if it only has 1/4 the carbon-14 it must have gone through two half lives . after one half life , it would have had 1/2 the carbon . and then after another half life , half of that also turns into a nitrogen-14 . and so this would involve two half lives , which is the same thing as 2 times 5,730 years . | how do we know that that is how long the carbon 14 's half life is ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | and then after another half life , half of that also turns into a nitrogen-14 . and so this would involve two half lives , which is the same thing as 2 times 5,730 years . or you would say that this thing is what ? | would n't we have to watch the carbon for 5,730 years to be completely sure ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | but this number up here can change depending on the number of neutrons you have . so the different versions of a given element , those are each called isotopes . i just view in my head as versions of an element . | how many different isotopes of carbon are there ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | what is the difference between the use of carbon 12 and carbon 14 ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | well , if it only has 1/4 the carbon-14 it must have gone through two half lives . after one half life , it would have had 1/2 the carbon . and then after another half life , half of that also turns into a nitrogen-14 . | can ny one plz tell me a method to determine the total amount of carbon in a plant ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | and we talk about in other videos . this is called a half life . and i want to be clear here . | if the half-life of carbon 14 is 5730 years , is its full-life 11460 years ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | you ca n't just say all the carbon-14 's on the left are going to decay and all the carbon-14 's on the right are n't going to decay in that 5,730 years . what it 's essentially saying is any given carbon-14 atom has a 50 % chance of decaying into nitrogen-14 in 5,730 years . so over the course of 5,730 years , roughly... | if you added a neutron to a nitrogen-14 atom and removed a proton , would n't you have a carbon-15 atom ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so that could be us . now why is this even interesting ? i 've just explained a mechanism where some of our body , even though carbon-12 is the most common isotope , some of our body , while we 're living , gets made up of this carbon-14 thing . | how do you even know how much the animals ate ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | it 's a probabilistic thing . you ca n't just say all the carbon-14 's on the left are going to decay and all the carbon-14 's on the right are n't going to decay in that 5,730 years . what it 's essentially saying is any given carbon-14 atom has a 50 % chance of decaying into nitrogen-14 in 5,730 years . | but ca n't you just take in a deferent amount of carbon ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so how old is this ? well , if it only has 1/4 the carbon-14 it must have gone through two half lives . after one half life , it would have had 1/2 the carbon . and then after another half life , half of that also turns into a nitrogen-14 . and so this would involve two half lives , which is the same thing as 2 times 5... | one half life means half of the carbon 14 is gone , then should n't two half lifes mean that all the carbon 14 is gone ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so how old is this ? well , if it only has 1/4 the carbon-14 it must have gone through two half lives . after one half life , it would have had 1/2 the carbon . | how can two half lives mean that it has lost three quarters of the carbon 14 ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | it 's a probabilistic thing . you ca n't just say all the carbon-14 's on the left are going to decay and all the carbon-14 's on the right are n't going to decay in that 5,730 years . what it 's essentially saying is any given carbon-14 atom has a 50 % chance of decaying into nitrogen-14 in 5,730 years . | is n't the carbon 14 going to decay while you live ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | i just view in my head as versions of an element . so anyway , we have our atmosphere , and then coming from our sun , we have what 's commonly called cosmic rays , but they 're actually not rays . they 're cosmic particles . you can view them as just single protons , which is the same thing as a hydrogen nucleus . | does that mean that cosmic rays are not part of the light spectrum ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | it 's a probabilistic thing . you ca n't just say all the carbon-14 's on the left are going to decay and all the carbon-14 's on the right are n't going to decay in that 5,730 years . what it 's essentially saying is any given carbon-14 atom has a 50 % chance of decaying into nitrogen-14 in 5,730 years . | why are all neutrinos left-handed ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | how do we know that that is definitely the process that carbon 14 is made ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so it 'll decay back into nitrogen-14 , and in beta decay you emit an electron and an electron anti-neutrino . i wo n't go into the details of that . but essentially what you have happening here is you have one of the neutrons is turning into a proton and emitting this stuff in the process . | how do we know that an organism wo n't take in any more carbon after death ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | and we talk about in other videos . this is called a half life . and i want to be clear here . | how can we be certain of the half life and how do we know it is constant ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | do different types of organisms have different amounts of carbon 14 ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | would someone who lived for 70 years have more carbon 14 at his death than someone who died young at 40 ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | would you expect a human to have more carbon 14 than a plant ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so let me write this down . constant formation . and let me be very clear . | has the rate of ionized particles emitted from the sun been constant throughout history ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | well , if it only has 1/4 the carbon-14 it must have gone through two half lives . after one half life , it would have had 1/2 the carbon . and then after another half life , half of that also turns into a nitrogen-14 . and so this would involve two half lives , which is the same thing as 2 times 5,730 years . | how did scientist determine that the half life of carbon is 5730 ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | when a carbon-14 atom decays , what happens to the molecule it was part of ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | and you say , hey , that bone has one half the carbon-14 of all the living things that you see right now . it would be a pretty reasonable estimate to say , well , that thing must be 5,730 years old . even better , maybe you dig a little deeper , and you find another bone . | would the percentage of c14 in the atmosphere have dropped during the past 100 years as a result of our suddenly increasing the co2 in the atmosphere by burning carbon atoms from petroleum deposits that were very old and therefore would have no more c14 in them ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so how old is this ? well , if it only has 1/4 the carbon-14 it must have gone through two half lives . after one half life , it would have had 1/2 the carbon . and then after another half life , half of that also turns into a nitrogen-14 . and so this would involve two half lives , which is the same thing as 2 times 5... | how do half lives determine age ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | and 78 % , the most abundant element in our atmosphere is nitrogen . it is 78 % nitrogen . and i 'll write nitrogen . its symbol is just n. and it has seven protons , and it also has seven neutrons . | how do we understand the nitrogen and even other relevant elements levels to be consistent throughout time ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | what if one bone is missing all carbon 14 in it ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so kind of this process reverses . so it 'll decay back into nitrogen-14 , and in beta decay you emit an electron and an electron anti-neutrino . i wo n't go into the details of that . but essentially what you have happening here is you have one of the neutrons is turning into a proton and emitting this stuff in the pr... | would n't we then have little subatomic matter-antimatter explosions happening all around us as the electron anti-neutrinos react with their matter counterparts ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | is it possible to perform a dating of a sample from mars ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so carbon-12 is the most common . so most of the carbon in your body is carbon-12 . but what 's interesting is that a small fraction of carbon-14 forms , and then this carbon-14 can then also combine with oxygen to form carbon dioxide . and then that carbon dioxide gets absorbed into the rest of the atmosphere , into o... | what happens if that person happened to already eat 1/2 carbon 14 or just eat completely only carbon 12 ? |
what i want to do in this video is kind of introduce you to the idea of , one , how carbon-14 comes about , and how it gets into all living things . and then either later in this video or in future videos we 'll talk about how it 's actually used to date things , how we use it actually figure out that that bone is 12,0... | so then you have the earth 's atmosphere right over here . let me write that down , atmosphere . and 78 % , the most abundant element in our atmosphere is nitrogen . it is 78 % nitrogen . and i 'll write nitrogen . its symbol is just n. and it has seven protons , and it also has seven neutrons . | but is n't nitrogen present in a bonded state ( n2 ) in the atmosphere ? |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.