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The change in size of an object due to thermal expansion depends upon
Affiliation
A psychological need to feel a sense of involvement and "belonging" within a social group; it's the driving force behind our desire to build friendships, join groups, and identify with others.
Instinct
A natural, usually unchangeable behavior observed in animals as a reaction to specific triggers.
Spiders
Arachnids characterized by eight legs, a chelicerae with fangs that inject venom, and the ability to spin webs.
Intrinsic Motive
A form of motivation driven by internal rewards, such as personal satisfaction, curiosity, or enjoyment, rather than external factors.
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