"The taller you are, the faster your heart rate." This hypothesis is testable, but not experimental.
The nucleus of the cell.
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Enzymes reduce the activation energy allowing chemical reactions to occur in living things.
Answer:
Small intestine
Explanation:
The small intestine is also where most nutrients are absorbed into the blood. The later sections of the small intestines are covered with tiny projections called villi. Villi contain very tiny blood vessels.
Answer:
through use of enzymes and cells
Explanation: