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Depends on the age of the person, for adults it's approximately seven to eight hours per night. However you do have cycles during your sleep, these are "REM" and "non REM" sleep. These cycles last roughly ninety minutes each, not a great idea to wake abruptly from REM sleep cycle as this can cause you to wake up like the Gringe!
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Describe many paths a carbon molecule can take through the carbon cycle?
ask a smart person they will tell you the answer lol
What two processes take place during the oxygen cycle?
The two processes that take place during the oxygen cycle would be cellular respiration and photosynthesis. The oxygen cycle is also known as the carbon cycle.
How long does it take for one water cycle?
groundwater-10,000 years lakes-50-100 years river- 2-6 months
When does the rock cycle end?
Indeed. That is why it is called a cycle. Rocks do not stay as they are but are continually forced to change as a result of changes in their environment. It may take a relatively short time period or a very long time to change from one form into the next -- even eons -- but eventually it happens. If we could watch the vastness of geological time speeded up to seconds and minutes, we would see large mountains rising and disappearing and even continents whirling and splitting and rejoining each other like mere clouds on a windy day.
How long does it take for weather to change?
how long idoes it take the weather to change
How long does it take for a tree go through a cycle?
a month
How long does it take the moon to cycle through all of its phases?
29.5 days
How long does the moon take to go through an entire cycle?
one month
How long does it take for earth's moon to go through a full cycle?
28 days
How long does it take for the moon to move through one full cycle?
a day or a year
How long does it take for a frog to go through it's life cycle?
5 days
How long does it take for a human liver to go through cell cycle?
about 4 hours
What does it mean by sleep cycle?
The sleep cycle means how human sleeps and at what time. For example if everyday I wake up at 7 in the morning, then take a nap at 12 at noon and go to sleep at 11 at night that is called sleep cycle.
How long does it take for the moon to go through a lunar cycle?
29 and 1/2 days.
How long does it take the moon to go through one full cycle of phases?
29.53 days
How long does it take to go through the phases of the moon cycle?
About 29 and 1/2 days.
How long does it take the moon to go through a cycle of phase?
29.5 days.
