Question

Recent astronomical findings suggest that the earth’s early atmosphere may have contained ______.

Options

• CO₂

• CO

• nitrogen

• all of these.

Answer 1

Recent astronomical findings suggest that the earth’s early atmosphere may have contained CO₂, CO and nitrogen.

Explanation:

This is supported by the information stating the primitive atmosphere contained gases such as hydrogen, nitrogen, carbon dioxide, methane, ammonia, and water vapors, but was devoid of free oxygen. The atmosphere was reducing in nature rather than oxidizing, and included CO₂, CO, and nitrogen among others.