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A hummingbird guarding a hummingbird feeder is an example of


A) dominance hierarchy.
B) altruism.
C) territoriality.
D) selfishness.

E) A) and D)
F) All of the above

Correct Answer

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Which social interaction is best described as the opposite of altruism in terms of its effect on donor and recipient fitness?


A) cooperation
B) selfishness
C) spitefulness
D) dominance

E) None of the above
F) B) and C)

Correct Answer

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