I would say C.
https://quizlet.com/155406628/module-3-review-flash-cards/
Answer:
The sinking of cold air creates regions of high pressure and this air travels to lower pressure regions produced by the rising motion of warm air. This process results in air circulation.
Explanation:
Digestion of fats starts I small intestine so the answer is Fat.
Answer: carbon is an integral part of many biological processes, including reproduction, photosynthesis and respiration
Explanation: because carbon ability to form stable bonds with many elements, including itself.