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kieraahern kieraahern
wrote...
Posts: 332
6 years ago
Earth's earliest atmosphere was most likely composed of hydrogen, helium,
A) oxygen, and nitrogen.
B) methane, and nitrogen.
C) methane, and ammonia.
D) oxygen, and ozone.
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wrote...
6 years ago
 C
kieraahern Author
wrote...
6 years ago
Makes more sense now, have a good weekend!
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