When the hormone insulin is released into the bloodstream, what form of cell-to-cell signaling is being used?

a. endocrine

b. paracrine

c. neuronal

d. contact-dependent?

In the practice of science, this type of reasoning is used to develop explanations.

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.

What is the ecological role of food chains and food webs