Fish that live in saltwater and fish that live in freshwater both have water balance challenges that deal with osmosis. What is the best characterization of the challenges for each, based on your investigations in this laù?
A)Both types of fish must constantly get rid of excess water.
B)Freshwater fish must get rid of excess water and saltwater fish must retain the water they have.
C)Freshwater fish must retain the water they have and saltwater fish must get rid of excess water.
D)Both kinds of fish must retain as much water as they can.