Question

q10. 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 lab? both types of fish must constantly get rid of excess water freshwater fish must get rid of excess water and saltwater fish must retain the water they have. freshwater fish must retain the water they have and saltwater fish must get rid of excess water. both kinds of fish must retain as much water as they can.

Explanation:

Freshwater has a lower - solute concentration than the fish's body, so water enters the freshwater fish by osmosis, and it must get rid of excess water. Saltwater has a higher - solute concentration than the fish's body, so water leaves the saltwater fish by osmosis, and it must retain water.

Answer:

Freshwater fish must get rid of excess water and saltwater fish must retain the water they have.