Where in a river would you find fish that are adapted to low light and low oxygen levels?
a) at the source
b) in the mid-river
c) near the mouth
d) no place in the river is characterized like this.

Study the picture of the ocean. which is the best example of an organism’s niche shown in the picture? a. the environment contains several of the same species of coral. b. the shallow area of the ocean meets the needs of the coral and the fish. c. the ocean has fish and coral that live in the same area. d. the coral take in food from the water and provide shelter for the fish.