Question

Which component was not found in the early Earth's atmosphere?

• A. Oxygen
• B. Carbon dioxide
• C. Nitrogen
• D. Ammonia

Hint:

The lack of oxygen in the early atmosphere was crucial for the formation of anoxic conditions, which influenced the development of early life forms.

Answer 1

The Correct Option is A

Early Earth's atmosphere consisted mainly of carbon dioxide, nitrogen, and ammonia. Oxygen was scarce until photosynthetic organisms later produced it in large quantities.