Examlex
All the terrestrial planets have atmospheres as dense as or denser than Earth's.
Drive Theory
A psychological theory that suggests human behaviors are motivated by internal drives that seek to reduce physiological needs.
Stimulation
The act of encouraging a biological or physiological activity or response through some external input or action.
Motivation
Motivation is the internal process that activates, guides, and maintains behavior towards achieving a goal.
Homeostasis
The capacity of an organism or environment to sustain equilibrium in reaction to alterations.
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