A pesticide is any substance or mixture of substances intended for preventing, destroying, repelling, or migrating any pest. The term pesticide also applies to herbicides, fungicides , and various other substances used to control pests. Applying pesticides helps to control shortages by killing insects that harm the food supply by decreasing the crop production.
Insects are a serious problem especially within poorer countries.
Crop plants engineered for herbicide tolerance and weeds will cross-breed which would result in the transfer of the herbicide resistance genes from the crops into the weeds. Applying pesticides helps to control higher prices, income loss and prevent unappealing blemishes. Laboratory and field evidence shows that genetically modified crops can harm beneficial insects, damage soils, and transfer their engineered genes in the environment, thereby contaminating neighboring crops. Allowed pesticides are very low on the list of risks hazardous to heath. Large scale studies suggest that pesticide residues are unlikely to be and important risk factor for cancer to the general public.