21. When a person exercises, heart rate increases. Explain how increased blood flow helps maintain homeostasis during exercise.

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Which macromolecules are polymers made of nucleotides (a) fatty acids (b) nucleic acids (c) carboxylic acids (d) amino acides

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons