Salmon live in both fresh water and salt water during their lives. they are born in fresh water nut migrate out to marine waters for most of their life . eventually they return to the place they were born in fresh water to spawn. changing between fresh water and salt water affects the balance of water in their body Salmon have and internal control system called osmoregulation that restores the balance by negative feedback this is a example of which characteristic of life. 1. adaption 2.reproduction and development 3. response to the environment 4. energy transformation 5. maintaining homeostasis

18. determine whether each stateme blank space given. ach statement is true (t) or false (f). place your answer in the 8. when a cell is put into an isotonic solution, individual wat put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane. d. when a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell. c. when a cell is put into a hypotonic solution, there is a net movement of water molecules across the cell membrane out of the cell. d. the movement of any solvent across a semi-permeable membrane is called osmosis. e. carrier proteins have the ability to change shape and physically move molecules across the cell membrane. f. in facilitated diffusion, the concentration of the molecules to be moved across the cell membrane is higher inside the cell.