Plants, animals and humans all depend on balanced amounts of the following gases found in the air: oxygen (O2), water vapor (H20), and carbon dioxide (C02) as a basic requirement of life.
(Plants, animals and humans; depend; on balanced amounts of the following gases) (the following gases; found; L:in the air)
Plants, animals and humans the following gases
depend found
on balanced amounts of the following gases
L:in the air