The earth\'s daily rotation affects just about eVery living creature.
This Very Short Introduction explains how organisms can -know- the time and reveals what we now understand of the nature and ope.
Thus, the near 24 hour Circadian rhythm is innate: a genetically programmed clock that essentially ticks of its own accord.
However, these changes are regular, rhythmic and, therefore, predictable.
From dawn through to dusk, there are changes in light, temperature, humidity, and rainfall.
The earth\'s daily rotation affects just about eVery living creature