main ingredients in proteins
The lungs don't separate oxygen from nitrogen. The air enters the bloodstream as the oxygen/nitrogen mix breathed in. The oxygen gets used by the cells and replaced with carbon dioxide. The carbon dioxide/nitrogen mix is returned to the lungs and expelled.
Nitrogen in the bloodstream is the primary cause of what is known as "the bends" in divers. The rapid decrease in pressure caused by rising too fast from deep water causes nitrogen molecules to expand and accumulate in a diver's joints, causing extreme pain. Compression, an increase in pressure, is the only way to alleviate the bends, either by returning to a deeper depth or by spending time in a compression chamber.
Nitrogen is essential in the human body, it is needed to make up amino acids, which in turn make up proteins. It is also needed to make nucleic acids, which form DNA and RNA It is used to make carbohydrates. Without protein and DNA we would not be alive, both of which need nitrogen. It is essential for us.
By breathing. It's in the air.
well, herbivores eat plants (which have nitrogen in them due to help from nitrogen fixating bacteria) then other animals eat herbivores. Since animals are heterotrophs they have to get their nutrients from other organisms.
Because really, Nitrogen in its gas from is a very inert substance. Even Legume plants that "fix" nitrogen in the air expend a lot of energy doing so. So in a way it's more worth while using oxygen, which is more reactive than nitrogen.
One of the most common reasons is because you are breathing through your mouth while you sleep. This most often happens when you have a cold.
Carbon is combustible while nitrogen is not.
while breathing
While nitrogen is usually fairly inert, magnesium is so reactive that even nitrogen can react with it.
It goes up - surprisingly, while this practice induces unconsciousness, it is not due to lack of Oxygen - it is the overabundance of unremoved unwanted CO2 that makes One pass out.
It is customary to rise when the judge enters or departs the courtroom and when the jury enters and departs the court room. If you don't you may get a lecture from the judge and a cool place to sit for a while while you ponder the advisability of standing when directed. As a defendant, why would you even want to annoy the judge or jury who is going to decide your fate?
Nitrogen-15 would have 8 neutrons, while nitrogen-9 (if it existed) would only have 2.
When light enters a glass block, it undergoes reflection and refraction. However at the glass air interface, refraction occurs to a larger extent than refraction and hence some of the light is reflected while the rest of it enters the glass block.
A single nitrogen atom can be chemically reactive while a nitrogen molecule is relatively stable and tends to be faf more inert. A nitrogen molecule also has twice the mass of a nitrogen atom.
Because in the mountain range there have lack of oxygen for our breathing