If you could magnify the surface of a leaf to see it up close, what type of structures do you think you might see that could help explain how gases (like carbon dioxide, oxygen, or water vapor) get into and out of the leaves of the plant?

b. heterotroph

explanation:

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

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