A. It was used in the Vietnam War to chemically destroy tree and crop cover. b. It causes cancer and birth defects. c. It is produced as a byproduct of numerous industrial manufacturing processes. d. It tends to concentrate in certain food products, especially fruits and vegetables. e. It is now present to such an extent in our North American food supply that women who plan to have children in future are advised to limit their consumption of the foods it concentrates in.