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tatiyna
4 years ago
11

What gas dominated earthed first atmosphere

Biology
2 answers:
sammy [17]4 years ago
4 0

Answer:(4.6 billion years ago)

As Earth cooled, an atmosphere formed mainly from gases spewed from volcanoes. It included hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today's atmosphere.

Explanation:

Ahat [919]4 years ago
3 0
As earth cooled, the atmosphere formed mainly from gases spewed from volcanoes. It included HYDROGEN sulfide, methan, and ten to 200 times as much CO2 as today’s atmosphere.
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