Giraffe running away from a lion: External Stimulus
Baby laughing at a dog: External Stimulus
Plants begin to wilt and droop: Internal Stimulus
Child has a fever: Internal Stimulus
The example of a giraffe running away from a lion is an instance of an external stimulus. In this scenario, the external stimulus is the presence of the lion, which prompts the giraffe to engage in a defensive action—running away. Similarly, when a baby laughs at a dog, it is responding to an external stimulus, namely the amusing or entertaining behavior of the dog.
On the other hand, the examples of plants wilting and a child having a fever represent responses to internal stimuli. The plants' wilting and drooping may be triggered by internal factors such as a lack of water or nutrients, while a child developing a fever is a bodily response to an internal condition, possibly an infection or illness. Internal stimuli originate within the organism itself, influencing its physiological or behavioral responses.