How does the nervous system influence the respiratory system. A. It controls muscle contraction.
B. It stimulates defense against pathogens
C. It regulates urine output.
D. It regulates heart rate.

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Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.