Viruses cannot reproduce on their own and require a host organism to do it for them. this is one reason viruses are not considered to be alive
true or false

Viruses can only replicate themselves by infecting a host meaning they can not reproduce on their own.

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

answer///island,peninsula;