Every fall,black bears move into dens and hibernate until the spring.This is an example of a(n)_________ rhythm.
A)seasonal
B)circadian
C)circannual
D)ultradian

Name: Every fall,black bears move into dens and hibernate until the spring.This is an example of a(n)_________ rhythm. A)seasonal B)circadian C)circannual D)ultradian
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Circannual rhythms are biological rhythms that occur once a year, such as seasonal behaviors in animals like hibernation, migration, or breeding patterns.

Every Fall,black Bears Move into Dens and Hibernate Until the Spring.This