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Who believed the species on Earth changed over time as a result of periodic great catastrophes?
Thirst Level
An individual's subjective feeling of needing to drink fluids, often influenced by physiological signals of dehydration.
Drive-Reduction Theory
A theory of motivation suggesting that the motivation arises from biological needs that demand satisfaction, driving individuals to reduce the state of tension through specific behaviors.
Motivated Behavior
Actions that are driven by internal or external forces aiming to satisfy specific needs or achieve particular goals.
Sexual Arousal
A physiological and psychological state of excitedness and readiness for sexual activity, often accompanied by physical changes.
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