Question

Which mixture of gases is thought to have made up Earth's early atmosphere?

A. methane, oxygen, hydrogen, water vapor
b. carbon dioxide, nitrogen, oxygen, ozone
C. hydrogen, water vapor, ammonia, methane, carbon dioxide
d. ozone, water vapor, carbon dioxide, ammonia

Answer 1

D.

Explanation:

Almighty

Answer 2

The correct Answer Is D Because When The earth was formed There was no oxygen on earth A few thousand years Later Some Mineral Life created Oxygen And Some years later A few Plants Started Growing