Environmental Protection Tip of the Day 9.21: Reward for participation, plus 5 more points for answering 3 questions correctly

2016-09-21View Original

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Fill-in-the-blank: ( ), (water pollution), and ( ) are known as the three major environmental pollutants in the world today. Air pollution Noise pollution

Reply #22016-09-21

(Air pollution), (Water pollution) and (Noise pollution)

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Environmental Protection Tip of the Day 9.21: Reward for participation, plus 5 more points for answering 3 questions correctly

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