On a warm summer day, a deer is searching for something to drink. The deer is most likely responding to which kind of stimulus? the external stimulus of heat the internal stimulus of heat the internal stimulus of thirst the external stimulus of thirst

your Answer is:         the external stimulus of thirst

Explanation:

A stimulus is an external agent which is likely to develop a response in an organism. According to the given situation, the external heat generated due to the warm summer day will likely to produce thirst response in deer because of the evaporation of body water by the surrounding heat.                you can me if you want.

its the internal stimulus of thirst

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