Classify the following items as external stimulus and internal stimulus.Sound, hunger, touch, heat, chemicals, pressure, infection, pressure variation, thirst, cold, exhaust, radiations.

Classify the following items as external stimulus and internal stimulu

1.	Classify the following items as external stimulus and internal stimulus.Sound, hunger, touch, heat, chemicals, pressure, infection, pressure variation, thirst, cold, exhaust, radiations.
Answer» External stimuli: Sound, touch, heat, chemicals, pressure, cold, radiations. Internal stimuli: Hunger, touch, infection, pressure, variation, thirst, exhaust.

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Classify the following items as external stimulus and internal stimulus.Sound, hunger, touch, heat, chemicals, pressure, infection, pressure variation, thirst, cold, exhaust, radiations.

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