QUICK FIRST TO ANSWER GETS How is the nitrogen gycle important to humans? It produces free nitrogen that humans can breathe
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converts nitrogen into a form that humains can obtain by eating over Brigini
It produces nitrogen compounds that humains can breathe
It converts nitrogen into a form that humans can obtain by absorbing it through their skil

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

As a small change in a person's dna can cause a genetic disorder

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.