Answers

2016-03-11T22:22:17+05:30
Light pollution, also known as photo-pollution or luminous pollution, is the excessive, misdirected or invasive use of artificial outdoor lighting.
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2016-03-12T07:19:00+05:30
light pollution is the excessive and prolonged use of artificial lights, in a way that results in brightening of night skies, disrupting natural cycles and activities of wildlife, health probelms in humans, as well as preventing humans from observing stars and other planets. 
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