1. evolution
At the same time, the earth was showered by a very strong meteor shower. ... It did not contain oxygen, which is the main reason why the Earth could not have supported life. As for oceans, they couldn't have existed at first because the Earth's surface was extremely hot. ... They performed an experiment that suggests how the Earth's atmosphere might have formed. ... The electric sparks resembled lightning at the time of the Earth's formation. ...
- Word Count: 2685
- Approx Pages: 11
- Grade Level: High School