![]() without permission. | A major problem with pesticides is that their continued and widespread use causes resistance to build up in the pest population. This results in more broad spectrum pesticides being used. The results in an imbalance of the natural ecosystem as the pests and their natural predators are killed. |
DDT breakdown products have caused bird eggshells to thin. This causes breeding failures in birds of prey as eggs are not strong enough to allow the embryo to develop to full term. | ![]() |