Question

13. Why were some pesticides such as DDT removed from public use?

a. they can cause heart disease
b. they can cause diabetes
c. they can cause meningitis
d. they can cause cancer
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Answer 1

d. they can cause cancer

Explanation:

Dichlorodiphenyltrichloroethane (DDT) is a chemical which is used as a pesticides. DDT is an organic compound which has no smell, no colour and no taste. This chemical is banned because it causes cancer disease in human as well as pollute the environment. Pesticides are used to kill harmful insects so DDT is used for it but when people know that they cause cancer disease, they are banned.