The bacteria Aliivibrio fischeri luminesce when the population reaches about 1011 bacteria per mL of water. Identify the signal and the response in this scenario. a. Luminesce is the signal and increased population is the response.
b. A population of 10^11 bacteria per mL of water is the signal and luminesce is the response.
c. Water is the signal and a population of 10^11 bacteria per mL is the response.
d. Aliivibrio fischeri is the signal and luminesce is the response.

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

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the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

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