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Today's atmosphere is full of nitrogen and oxygen. These are _____. A. trace gases B. variable gases C. primary gases D. secondary gases

Today's atmosphere is full of nitrogen and oxygen. These are _____. A. trace gases B. variable gases C. primary gases D. secondary gases
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Today's atmosphere is full of nitrogen and oxygen. These are _____.

A. trace gases
B. variable gases
C. primary gases
D. secondary gases

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User Ed DeGagne
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8.0k points

2 Answers

4 votes

Today's atmosphere is full of nitrogen and oxygen. These are primary gases.

answered
User Veedrac
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8.1k points
6 votes
There are C. primary gases
answered
User Bomber
by
8.5k points
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