4. Which of the following is a consequence of the zebra mussel population in the great lakes
a. cleaner water
b. decline in algae populations
c. decline in fish populations
d. all of these

All cells need water to survive. in order to maintain the necessary amounts, water can flow across the cell membrane from areas of higher concentration to areas of lower concentration. what is this flow of water called? a) active transport b) allocation c) diffusion d) osmosis