There are many sleep disorders. One is something called Non-24 and is seen mostly in blind people although sighted people also can have it.
Circadian rhythms are a living organisms day/night cycles, daylight interacting with body hormone chemistry.
march
at any given times,how much of earth is in daylight and how much is in darkness?
at any given times,how much of earth is in daylight and how much is in darkness?
at any given times,how much of earth is in daylight and how much is in darkness?
at any given times,how much of earth is in daylight and how much is in darkness?
There is a Tornado valley! and there is such thing as Tornado Alley!
they are cool
Daylight and darkness.
no
darkness
The moon rotates on its axis once each month, so daylight / darkness is about 14 or 15 days each.