What life process is affected when the integumentary system detects external changes in the environment (such as a change in temperature)

Well, both latitude and intensity of light affect temperature because, the higher the light intensity, the higher the temperature and since latitude is the measure of how close you are to the equator, then the closer to the equator you are, the higher the temperature is.

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Centriole.centrioles are present in animal cells but are usually absent in plant cells.