Question

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

Answer 1

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

Step-by-step explanation:

Answer 2

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

Step-by-step 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.