Multiple Choice
Why did Earth's original atmosphere, composed primarily of hydrogen, not last long?
A) Hydrogen is a very light gas, and it soon escaped into space.
B) Biological activity very quickly combined the hydrogen with oxygen to form water.
C) Hydrogen soon dissolved in Earth's oceans.
D) Hydrogen is highly reactive, and it became bound to chemical compounds in Earth's rocks.
Correct Answer:
Verified
Correct Answer:
Verified
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