Why do we have Day and Night?

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Andy Darvill's Space Site - Night and Day

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Earth-Moon-Sun Cycles. Cycle # 1 Day and Night Day  Night  Day

WHAT CAUSES DAY AND NIGHT ?

Day and Night Video (Year 5)

Day or Night Sorting

WHY DO WE HAVE DAY AND NIGHT??? - ppt download

Day and Night: Day and Night

Day and Night, PDF, Sky

Day and Night - The New York Times

Night and Day by Gerrit Henry