9. What happens when most chemical changes take place a. Only the form of the matter changes.
b. The mass of the matter increases.
c. There is no change in heat.
d. Heat is liberated or absorbed.

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.