Question

List two forms of oxygen found in the atmosphere full stop name the process(s) by which: (A)oxygen from the atmosphere is used up (B) oxygen is returned to the atmosphere.

Answer 1

The two forms of oxygen found in the atmosphere are:

(i) Diatomic molecular form with chemical formula O2.oxygen that we breathe

(ii) Triatomic molecular form with chemical formula O3known as ozone. That protect us from uv rays A)Oxygen from atmosphereis used up by photosynthesis and for respiration. B)oxygen is returned to atmosphere by combustion and decaying