Q58 Don't agricultural products have the place for which it still depends on rain water considerably, either? A Rain water will be polluted while getting down through the atmosphere. And soil is polluted with agricultural chemicals or exhaust gas in itself. So, we have to think that the water which passes through that place and is absorbed by the root of crops contains most quantity of the contaminant. In the system of present age agriculture, it is not materialized without use of agricultural chemicals. Organic farming is tried in the part. But, the agricultural technique using agricultural chemicals is completely difficult. It is most difficult for survival of a medicine to be checked also in an organic fertilizer and to aim at perfect no agrochemicals. When not using agricultural chemicals for it, it will take time and effort very much. It is the agriculture of the advanced nation where aging is advancing without a brake, and it is cruel to ask a farmhouse for the labor burden more than now. There are still non-agricultural-chemicals crops. But, compared with a natural matter but ordinary crops, a price will become high remarkably. Since a consumer's knowledge is insufficient, such articles of trade are kept away from, and hardly ride on circulation of a supermarket etc.