Please keep it simple enough to understand I really do appreciate it if you would!
Please keep it simple enough to understand I really do appreciate it if you would!
some of the theories are the "Big Bang theory" that was the formation of the universe 20 billions years ago. Earth formed 4.5 bya. It was found water vapor, hidrogen, nitrogen, amonia, and methane in the atmosphere at first. and the oxygen were not found at first in the atmosphere
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