Examlex
Poland suffered repeated losses of its territory to which countries?
Circadian Rhythm
The internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours.
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.
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