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The world’s environmental situation might be eased if we carefully deal with our waste.

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Meanwhile, water used for agriculture accounts for more than two thirds of human’s use of water.

By using “micro-irrigation”, in which water is piped and fed onto crops through sealed systems, irrigation can be made 90% efficient.

Nevertheless, it is the political level that determines whether the battle to fight against the global water problems will ultimately be won or lost.

v.拒绝，不同意n.废弃物，垃圾