O helium and oxygen
2. What two gases make up the majority of Earth's atmosphere? (1 point)
H...
Geography, 10.02.2021 03:50 Learsyguerra26
O helium and oxygen
2. What two gases make up the majority of Earth's atmosphere? (1 point)
Huliem and oxygen
oxygen and hydrogen
nitrogen and helium
Oxygen and nitrogen
Answers: 3
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