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"Environmental hazards" include lead, mercury, and PCBs.
Stimulus Motive
An intrinsic desire to explore and interact with the environment, driven by external stimuli.
Primary Drive
A basic, innate urge or motivation, such as hunger or thirst, that prompts an organism to take action to satisfy its needs.
Secondary Drive
A learned association that becomes as motivating as primary biological drives through conditioning, such as the desire for money because it buys food.
Pygmy Chimpanzees
Also known as bonobos, a species of great ape known for their matriarchal societies and high levels of sexual behavior as a social activity.
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