Testosterone is an example of a chemical signal that affects the cells that synthesize it, the neighboring cells in the testis, along with distant cells outside of the testis. Thus testrosterone is an example of .
I. an autocrine signal
II. a paracrine signal
III. an endocrine signal
A. only I and II
B. only II and III
C. only I and III
D. I, II, and III

Which represents a negative impact of technology

What happens to the average kinetic energy of water molecules as water freezes?

High blood pressure occurs when there is too much blood flowing through the blood vessels at one time. by changing the amount of water in the blood, blood pressure can change. the excretory system can to lower blood pressure.which would most likely occur in the kidney? a)more water would be transferred from the nephron.b)less water would be absorbed into the nephron.c)the amount of water in the bladder would decrease.d)the amount of water in the blood would increase.