Which mixture of gases is thought to have made up earth's early atmosphere?
a. methane, oxyge...
Mathematics, 24.09.2019 22:00 Kennethabrown09
Which mixture of gases is thought to have made up earth's early atmosphere?
a. methane, oxygen, hydrogen, water vapor
b. carbon dioxide, nitrogen, oxygen, ozone
c. hydrogen, water vapor, ammonia, methane, carbon dioxide
d. ozone, water vapor, carbon dioxide, ammonia
Answers: 2
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