Final answer:
Responsiveness is the ability of an organism to adjust to changes in its environment. An example of responsiveness to external stimuli is moving towards sources of food and water and away from dangers. Changes in internal environment can result in sweating and dilation of blood vessels to decrease body temperature.
Step-by-step explanation:
Responsiveness is the ability of an organism to adjust to changes in its internal and external environments. An example of responsiveness to external stimuli could include moving toward sources of food and water and away from perceived dangers. Changes in an organism's internal environment, such as increased body temperature, can cause the responses of sweating and the dilation of blood vessels in the skin in order to decrease body temperature.