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Oxygen is produced by plants and blue-green algae and consumed by burning and animals breathing.

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Eloise Upton

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Q: Which two processes are responsible for keeping the percentage of atmospheric oxygen the constant levels?
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Which two processes are responsible for keeping the percentage of atmospheric oxygen at relatively constant levels?

Oxygen is produced by plants and blue-green algae and consumed by burning and animals breathing.


Atmospheric circulation patterns keep the temperature of an area constant?

yes


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if the atmospheric temperature remains constant, then yes


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