why is ddt still a controversial issue?

Why is DDT still a controversial issue? Is it because DDT or () it design primarily to be  a highly  effective insecticide, which led to its widespread use as a general pesticide in agriculture. Since the world needs much attention about environmental problems, DDT is contributing chronic effects on human since this is toxic to life. It affects the nervous system, immune system, kidneys and liver. It also affect the human chromosomes.

Explanation:

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kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above

digestion

it excretes wastes