Answer:infectious disease
Explanation:
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Chemical digestion of carbohydrates, proteins, lipids, and nucleic acids. The chemical breakdown of the macromolecules that is contained in food is completed by tons and tons of enzymes that are created in the digestive system!
Because they don't have a or any cells and have no DNA
D because your calf muscle is under your knee in back to if it’s already built up and can go to the heel bone because the calf muscle is connected to the heel bone
