Dichlorodiphenyltrichloroethane or DDT is a pesticide and insecticide, which was very useful for the yielding of the crops. The DDT exceptionally increased the crop yield, but this pesticide was very harmful for the human and the animal health.
The DDT was well known for causing decreased fertility and reproduction in birds by causing death of the embryo due to thin egg shells. The DDT was very harmful to the aquatic animals. DDT is a carcinogen to humans, and a well known factor for the induction of breast cancer as well as leukemia, lymphoma, and pancreatic cancer.
Hence, the given blank can be filled with DDT.
