Describe the role of acetylcholinesterase in stimulation of a muscle fiber.

Barbara is converting 78°f to degrees celsius. first, she subtracts 32 from 78. what is the next step?

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?

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.