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Author Question: Circannual rhythms in birds are influenced by A) periods of food availability. B (Read 464 times)

penza

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on: Oct 27, 2013
Circannual rhythms in birds are influenced by
A) periods of food availability.
B) reproductive readiness.
C) periods of daylight and darkness.
D) magnetic fields.
E) lunar cycles.


Celeste

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Reply #1 on: Jul 27, 2019
C


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