Why was DDT banned which an organ chlorine compound, used first to control malaria, carried in mosquitoes and later to a variety to insect pests?
1.It brings about a change in sex chromosomes
2.It persists in the environment and bio-accumulates
3.It increases its affinity hundred-fold for haemoglobin preventing its coupling with oxygen
4.All of these
Posted Date:-2021-07-01 23:11:12