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全世界還有超過10億人口用不上清潔的水,人類每年有310萬人因飲用不潔水患病而死亡。面臨全球性的水資源匱乏,第47屆合國大會確定每年3月22日為世界水日。
節電即節約用電,其意為科學用電,而非不用電。要求社會大眾采取技術可行、經濟合理的措施,減少電能的直接和間接損耗,提高能源效率和環境保護。
廢物回收是把人類活動過程中產生的廢棄物進行處理和再次利用的收集過程。可根據廢物的性質,或行業性質實行分類回收,為充分處理和利用廢棄物提供條件。
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