Once a crop was sprayed with these pesticides, it killed insects for weeks and months, and not only the targeted insects but also countless more, and remained toxic in the environment even after it was diluted by rainwater. ... The other problem with the pesticides is that several of the species were building up immunities to the chemicals that were being used. ...
Once a crop was sprayed with these pesticides, it killed insects for weeks and months, and not only the targeted insects but also countless more, and remained toxic in the environment even after it was diluted by rainwater. ... The other problem with the pesticides is that several of the species were building up immunities to the chemicals that were being used. ...
Once a crop was sprayed with these pesticides, it killed insects for weeks and months, and not only the targeted insects but also countless more, and remained toxic in the environment even after it was diluted by rainwater. ... The other problem with the pesticides is that several of the species were building up immunities to the chemicals that were being used. ...
