Which of the following describes a response to external stimuli?
a rabbit runs away from a fox that is chasing it
a woman drinks water when she is thirsty
a boy eats food when he is hungry
a person yawns when oxygen levels in the blood are low
Which of the following describes a response to external stimuli?
a rabbit runs away from a fox that is chasing it
a woman drinks water when she is thirsty
a boy eats food when he is hungry
a person yawns when oxygen levels in the blood are low