During world war ii, ddt was used to get rid of mosquitoes which spread malaria and typhus. ddt is credited with the eradication of malaria. this was a great achievement for the human population but it had some negative side effects. which of these is the most well known negative side effect of using ddt? a) killed mosquitoes b) eradicated malaria c) damaged nontargeted species d) decreased the rate of cancer in humans