Some questions on a review that I have no idea!

Describe what the earth looked like when it first formed?

Why was the presence of oxygen so important keep in mind aerobic,anaerobic respiration and the amount of ATP produced?

n the beginning God created the heaven and the earth.

2And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.

3And God said, Let there be light: and there was light.

4And God saw the light, that it was good: and God divided the light from the darkness.

Oxygen is required in each type of respiration