And the evening and the morning were the first day.
Genesis 1:5
"A large number of organisms possess operational systems that vary in
intensity in a rhythmic manner over a 24-hour period.
These circadian
rhythms usually are entrained by light and are vital for the robust
functioning of the organism.
The regulatory
systems responsible for rhythmic phenomena can be complex, especially in
plants and animals. No transitional schemes can be constructed to
explain the emergence of the more complex systems from the simpler ones
found in bacteria on account of lack of homologous features conserved
across the kingdoms.
In laboratory experiments, considerable design
input is needed to construct the simplest artificial biological clock;
these do not run on a 24-hour cycle. The existence of circadian clocks,
with fundamental common design elements, specified complexity, and
functional coherence, argues for the existence of a designer." CMI
