Why are parasitic diseases more common in tropical regions? A. Hot, moist conditions promote growth.
B. All tropical regions are poverty-stricken.
C. Fewer predators allow parasites to thrive.
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D. Less nutrients are found in the tropical ground.

A)

Hot moist conditions promote growth.

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

condenser is used to focus in the light microscope.