Examlex
What is experienced by most couples after all their children grow up and leave home
Environmental Stimulus
A change in the environment that elicits a response from an organism.
Sign Stimulus
Any stimulus that elicits a fixed action pattern in an animal.
Sign Stimulus
An external sensory cue that triggers a fixed action pattern in an organism, an innate response to a specific stimulus.
Dutch Ethologist
A Dutch ethologist is a scientist from the Netherlands who studies animal behavior through observational and experimental methods.
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