Geography
Geography, 25.10.2019 12:43, kellersweeney

What are the two main gases found in earth's atmosphere?
a. nitrogen and argon
b. argon and methane
c. carbon dioxide and oxygen
d. oxygen and nitrogen

answer
Answers: 2

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Do you know the correct answer?
What are the two main gases found in earth's atmosphere?
a. nitrogen and argon
b. argon...

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