Biological clocks, internal molecular machines that keep track of time within organisms, and circadian rhythms, which keep track of the 24-hour cycle of day and night and light and dark, both enable organisms to adapt their behavior according to the most suitable conditions. There are many selective advantages that go along with the biological clocks of organisms, allowing them to be more productive, reproduce more easily, and mature in the most favorable conditions. These internal clocks help to ensure the evolutionary success of a creature wi
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