- 问题详情:Waterpollutionhappenswhenwastethingsfrommanyareasarethrownintorivers,lakesandseas.AgricultureTogetmorefood,farmersuselargeamountsofchemicals(化学制品).Whenthechemicalsarenotcompletelyusedbytheplants,theyarewashedawaybytherainwaterintorivers,l...
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