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4. Choose the best answer. The atmosphere is a(n) _______ system. O triangular O closed O open O man-made
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4. Choose the best answer.

The atmosphere is a(n) _______ system.
O triangular
O closed
O open
O man-made

User Bufferz
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5 votes

Answer:

Step-by-step explanation:

o closed you wouldn’t want random gases mixing together

User Byako
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