Internal/External Stimulus

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A bat hears the flapping wings of an insect. Is the flapping wings of the insect an internal or external response?

A person is hungry, so they eat and are no longer hungry. What happens in the body?

Shark swims toward the direction of the smell of blood. Is the smell of blood an internal or external stimuli?

Plant grows toward the direction of the sunlight. What is the stimulus?

Colder weather, animals hibernate and migrate. What is the external stimulus?

The daylight hours get shorter, humans sleep more. Is the stimulus internal or external?

A person is thirsty, so they drink gatorade. Is thirst an internal or external response?

Warmer weather, humans sweat more. What is the internal response by the body to control the body temperature?