Physical and chemical changes occur during digestion. An example of a chemical change during digestion is

A. mouth swallowing food
B. Teeth chewing food
C. enzymes breaking food down
D. esophagus moving food

Explanation:

enzyme breaking food down because their is are juice in the stomach and also in the intestines

the answer is:

carbon dioxide

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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