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What is Light pollution? Light pollution is excessive use of artificial outdoor light.

Why is it smart to use a bike?

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What is Light pollution? Light pollution is excessive&#160;&#160;use of artificial outdoor light.

Why is it smart to use a bike? Using bicycle instead of cars reduce air and noise pollution, reduce greenhouse gas emissions and provide a lot of benefits for our health.

Who destroy a lot of habitats? People

Light Pollution  | National Geographic

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