| http://www.w3.org/ns/prov#value | - IF these fertilizers are used increasingly, they CAN create serious environmental problems such as water pollution, and if used as substitutions for more traditional fertilizers, they MAY...If x happen, y will happen.C is not the best answer.A is the best choice among others.However, I confuse THEIR in A. someone tell about THEIR please!Hic, NO one knows? vd Senior Manager Joined: 29 Aug 2005
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