Oxygen during the early development of the atmosphere was:
A) common.
B) rare.
C) important for photosynthesis.
D) about the same as now.
E) created from the cooling of hot lava.

Name: Oxygen during the early development of the atmosphere was: A) common. B) rare. C) important for photosynthesis. D) about the same as now. E) created from the cooling of hot lava.
Brand: Quizplus
Rating: 4.9 (35 reviews)

Question

Quizplus · Accepted Answer

Oxygen was rare during the early development of the atmosphere. It was mainly produced by photosynthetic organisms later in Earth's history.

Oxygen During the Early Development of the Atmosphere Was