During respiration, members of the animal kingdom use and then release as a waste gas.

During respiration, we breathe in oxygen and breathe out carbon dioxide.

Explanation:

Members of animal kingdom use Oxygen and the release Carbon dioxide as a waste gas.

Explanation:

Animals breathe in oxygen which is released to the environment by plants. Animals releases carbon dioxide as waste gas to the environment which is inhaled by plants. And the cycle continues.

c. heat from the poles back down towards the equator.

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