How do molecules move into and out of most animal cells? O
A. by being absorbed into the mitochondria
O B. by passing through the cell membrane
C. by being absorbed into the nucleus
D. by passing through the cell wall
n

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures