Answer:
the theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes.
Explanation:
NACL is the correct answer
When the fish is put into fresh water, suddenly the concentration around them is very low and the water potential is extremely high. Water will now move from the relatively high water potential in the water to the relatively low water potential in the cells, the cells start to burst and the fish dies.
