Showing posts with label Day. Show all posts
Showing posts with label Day. Show all posts
Saturday, July 14, 2012
Day and night cycles on Earth
We live on Earth depending mostly on daylight. After sunset we stop our main activities, take rest and go to sleep at night. This refreshes, repairs or rejuvenates us for the next day activities. These daily activities prolong our life on Earth. How these day and night are formed in a day's time?
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