The use of chemicals and radioactive substances The chemicals include insecticide Pest eradication of drugs, some of these types of chemicals are not accumulated in the soil because of bacteria in the soil to break it, but they are watching net's service. Hydrocarbons (chlorinated hydrocarbon) and compounds to moisten Rio's net. (Chlorinated phenoxy) some durable insertion in clay or silt, because well, it's hard to subdue drug destroys the bacteria, some weeds, such as pesticides and didithi category discount Rin resistance being destroyed on the ground. Lol
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