The diagram below shows a ciliated cell from the lining of the airway. Which of the following states its function?Required to answer. Single choice.
(1 Point)

A)it is the place where diffusion of gases take place

B)it moves mucus and sweeps dust from lungs

C)it secretes trypsin

Pls tell m quickkk

Which event would lead to primary succession of a forest?

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.

Several billion years ago which gas was the least prevailant in the atmosphere