the disadvantagas

Lets continue our discussion.Now I will to tell u about disadvantages when teenager involve their self in agriculture.The disadvantages wish to be said more converging to future negative effect become to environment due to agriculture that had conducted. Chemical fertilizer and insecticide use can change biological rivers and lake. this case would result the river water and lake quality affected use of fertilisers and poison result that does not in controlled.Poison insect such as DDT and various of chemical fertilizer type used upper crop will be advanced absorbed inside land or in bring with by surface water run-off . If leach happened then chemical compound from fertilizer and poison would be brought by underground water flow retract river and lakes.the surface water run-off also would bring fertilizer and poison occur at earth surface retract river and lakes. After that,it would result plants inside billabong and further cause aquatic animal death.It is because lack of food supply which need in achieve due to water pollution which occurred.