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Biology, 15.04.2020 02:06 shira35

Some large fish allow smaller first to swim inside of their mouths without eating the smaller ones. The smaller fish get to feed inside the larger fish's mouth, and the larger fish gets parasites removed from its teeth. This is an example of:

A. reciprocal altruism
B. kin selection
C. audience inhibition
D. the cost-reward model

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