Which organisms convert nitrogen into a form that is usable by humans? A. Omnivores

B. Algae

C. Bacteria

D. Plants

mammal

explanation:

it would lead to upper respiratory infections and pneumonia.

essentially, one bacterial cell splits into two daugurer cells. bacterial offspring don't need or get care from their parents because they are in a sense their own parents. that said, some bacteria can and do depend on other bacteria especially in harsh environments such as bacterial microfilms in hot water tanks.