The two forms of oxygen found in the atmosphere are

What are the two forms of oxygen found in the atmosphere ?

What are the two forms of oxygen found in the atmosphere?

What are the two forms of oxygen found in the atmosphere.

What are the two forms of oxygen found in the atmosphere?

(a) What are forms of oxygen found in the atmosphere? (b) forests influence the quality of our air soil and water resources. Justify the statement.

Gases found in primitive atmosphere are

Oxygen form…... of the atmosphere