食品与水
生产1斤土豆需要约240升水，生产1斤小麦需要约500升水，而生产1斤大米需要940-2400升水。
制作2两多重的牛肉汉堡，其饲养肉牛所需的饲料需要约l1000升水；而从奶牛身上挤出并加工成l公斤的牛奶，需要1800-3700升水、
生产1斤重的糖，需要约1500升水；而从种植到收获并生产1斤咖啡，则需要约10吨水，
生产加工1碗米饭，需要约95升水；生产加工1个三明治面包和l份吐司，需要约150升水；生产加工1杯牛奶，需要约1000升水；生产制作一份冰激凌，则需要约1500升水。
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