Differentiate between external and internal stimuli.

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Solution

All living organisms respond to stimuli. The stimulus may be either external or internal.
External stimulus - An external stimulus is the one which the organism receives from its external environment.
Internal stimulus - An internal stimulus is the one which arises within the body of the organism.
External stimulus Internal stimulus
An external stimulus is the one which the organism receives from its external environment.
An internal stimulus is the one which arises within the body of the organism.
2. The external stimulus includes touch and pain, vision, smell, taste, sound, and balance. 2. The sensations of hunger thirst and fear are example of internal stimulus.

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Differentiate between external and internal stimuli

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External stimulus	Internal stimulus
An external stimulus is the one which the organism receives from its external environment.	An internal stimulus is the one which arises within the body of the organism.
2. The external stimulus includes touch and pain, vision, smell, taste, sound, and balance.	2. The sensations of hunger thirst and fear are example of internal stimulus.