protein is the only thing
Nitrogen is essential for living organisms because it helps plants grow, and plants supply animals their food. And without plants we would die.
Yes
Food grade nitrogen doesn't have any contaminants in it; regular nitrogen might.
they supply cells with nitrogen
There is no food supply for seeds but there is a food supply for animals that eat seeds is called food seed supply.
A zebra eats only plants and grass so it has a large supply of food compared to a lion which only eats certain animals, of which can be hard to find.
Autotrophic organisms are plants that don't need an exogenous supply of organic nutrition. Autotrophic organisms make their food from inorganic compounds, e.g. nitrogen.
Nitrogen enters the food web when plants absorb nitrogen compounds from the soil and convert them into proteins.
We get nitrogen in a usable form from our food.
The foxes eat from the wolves' food supply. The wolves themselves are not hurt or benefitted, only their food supply is. Therefore, it's commensalism.
any food containing proteins.
From old Leaves.