A human skeleton is shown in the photograph below. The elongation of structures A and B was stimulated by a hormone produced by the

i think that d. wind is the answer.   i missed the question when i answered a. currents.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

d. organisms have cells with different shapes and functions.

which