Question

the menstrual cycle is an example of a ____ rhythm. the sleep - wake cycle is an example of a ____ rhythm.
o biological; biological and a circadian
o circadian; biological and a circadian
o circadian; biological
o biological; circadian

Explanation:

The menstrual cycle is a biological rhythm as it is a natural bodily - related cycle. The sleep - wake cycle is both a biological rhythm (a natural body process) and a circadian rhythm (a 24 - hour cycle).

Answer:

A. biological; biological and a circadian