The two forms of oxygen found in the atmosphere are
(a) water and ozone
(b) water and oxygen
(c) ozone and oxygen
water and carbon-dioxide

Question

The two forms of oxygen found in the atmosphere are
(a)	water and ozone
(b)	water and oxygen
(c)	ozone and oxygen
water and carbon-dioxide

MyClass24 · Accepted Answer

Answer is (c) ozone and oxygen
Explanation:
Ozone is an allotropic form of oxygen