Which best defines matter?
O
A. All the living things on the planet
O
B. All solid objects that can be seen
O
C. Anything in the atmosphere
O
D. Anything that takes up space and has mass
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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