Using radioactive substances and chemicals. Using the drug eradication of pests and animals. The solid waste disposal and waste into soil cultivation. Soil is used in cultivation for a long time without taking into consideration maintenance .
The use of chemical and radioactive. , using pesticides and animals. properly disposing of garbage and other waste into the ground. cultivation Soil used in farming for a long time without taking up the maintenance.
the use of chemical and radioactive. using pesticides and animals. to dispose of waste and waste various into the soil cultivation soil used in agriculture for a long time, without regard to the maintenance of .