When a scientist uses the term "biological rhythm," they are referring to
A)a periodic,more or less regular,fluctuation in a biological system.
B)an awareness of oneself and the environment.
C)a biological fluctuation that occurs less frequently than once a day.
D)a biological fluctuation that is about 24 hours from peak to peak.

Question

Quizplus · Accepted Answer

A biological rhythm is a periodic, more or less regular, fluctuation in a biological system. This can include daily rhythms, such as the sleep-wake cycle, as well as longer rhythms, such as seasonal changes in behavior or reproduction.

When a Scientist Uses the Term "Biological Rhythm," They Are