mahaynaitline4d mahaynaitline4d

09-12-2015
Social Studies

Answered

Why is Earth's current atmosphere made up mostly of nitrogen and oxygen?

AEarth is eroding.
BEarth is warming up.
CEarth is continuing to cool.
DEarth has living things on the surface.

Verified Answer :

lobster lobster

09-12-2015

The answer is D bc we humans need oxygen to breath.

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