The events that lead to genetic drift are a. always natural disasters
b. random
c. predictable
d. related to human activities

What is thought to have caused the mass extinction at the end of the cretaceous period?

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.

Which is the best example of plant tissue? the answer is d (just took the test)