Which of these statements best describes a difference between Layer A and Layer B? Layer B is solid but layer A is molten.
Layer A is solid but layer B is molten.
Layer A moves in cyclic pattern but Layer B is stationary.
Layer B moves in cyclic pattern but Layer A is stationary.

this process is called "phosphorylation." a phosphate bond joins adenosine diphosphate to form adenosine triphosphate.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

synapse nervous system