Examlex
Most invertebrates have
Money
A medium of exchange, in the form of coins and banknotes, used to facilitate transactions for goods and services.
Intrinsic Motivation
The drive to engage in activities for their own sake, due to inherent interest or enjoyment, rather than for some separable consequence.
Extrinsic Motivation
A type of motivation driven by external rewards or pressures, rather than the enjoyment or interest in the task itself.
Pleasure
The feeling of happiness or satisfaction experienced from enjoyable activities or sensory impressions.
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