During the early earth, when photosynthesis has not yet evolved, there were only negligible amounts of free oxygen in the atmosphere. It was said that the Earth's atmosphere had no free oxygen then. This is about 3.5 billion years ago.
Answer:
I think it's revolution of the earth
Answer: Look Below for the answer!!!!
Explanation: Brainliest please
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Answer:
Asteroids/Asteroid Belt
Explanation:
The rocks between Mars and Jupiter are known as the asteroid belt. Many of the asteroids are grouped into families. Examples of asteroid families include Flora, Eunoma, Koronis, Eos and Themis.
