00:01
In ecosystems, plants and bacteria work together to take the nitrogen that's in our atmosphere that's not usable and turn it into ammonium, which is nh4 +, which is usable for living organisms.
00:16
And so we want to know what organic molecules use this nitrogen.
00:23
In other words, why is it important that we actually get the nitrogen out of the atmosphere anyways, but for living organisms.
00:29
Why do we need it? and so we have four organic molecules that living organisms use.
00:35
We have carbohydrates, lipids, which are fats, proteins, and nucleic acids.
00:42
And inside of these, they are made up of certain elements.
00:47
So carbohydrates are made out of carbon, hydrogen, and oxygen.
00:54
Lipids are also made of carbon, hydrogen, and oxygen.
00:59
Okay...