the levels of water and salt in the blood are controlled by the
which is controlled by the
•
o a. hypothalasius, liver
•
b. kidneys, pituitary gland
oc. liver, cerebellum
•
d. kidneys, hypothalamus

more words for this could be abiotic and biotic

abiotic: living organisms within an ecosystem

biotic: non-living organisms within an ecosystem

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

i think the answer would be a. after sentence 14! i hope i at least a little