Answer:Insecticide DDT(dichlorodiphenyltrichloroethane) have a harmful effect on the stimuli because it can not be broken down by decomposers such e.g bacteria and fungi. Therefore, remaining on the surface for a long period of time (i.e it's non biodegradable).
Step-by-step explanation:
DDT was an organochlorine insecticide used mainly to control mosquito-borne malaria, but has been banned in US and other countries due to its harmful effects on humans. It's not biodegradable, like I said earlier, it's not capable of being decomposed by biological activity, especially by microorganisms.The chemical breaks down of DDT is very slow and accumulates in the fatty tissues of animals (including people).
DDT is an endocrine disruptor, meaning it acts like a hormone or affects how other hormones act in the body. This endocrine disruptors throw off the body’s hormonal balance by blocking or mimicking hormones, such as estrogen in the woman body. Studies have shown that DDT is linked to birth defects.