the ground absorbs and treats ...

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the ground absorbs and treats pollution as the nitrate. principal the tool against this gence of pollution being the plant. the questions which arise on the expressed subject are the following ones: of or and which is emitted this pollution? most important, which are the quantities volumes? is it rough or associated with others polluting such as potash does nitrogen phosphate? in nature it is not too the pollution which it is necessary to look at but its production and the redundancy of its supply. which is the degree of its infiltration because automatically by taking account of all the precedent criteria it will join the water table like so precisely announced a comment