Question

DDT is an insecticide that was formerly used to control insects that would eat crops. It was banned from use in the 1970s.

Which statements describe negative consequences that may have led to the banning of DDT? Check all that apply.

It contained toxins.
It killed off bird populations.
It improved crop production.
It controlled diseases like malaria.
It caused harm to human populations.

Answer 1

It contains toxins

It killed off bird populations.

It caused harm to human populations.

Step-by-step explanation:

Let us understand the term DDT

DDT : Dichlorodiphenyltrichloroethane

• This is a crystalline chemical compound
• Basically used for protecting insects eating crops
• It is colorless, odorless, tasteless
• Initially used as pesticides

It killed off bird populations: Though it does not kill birds directly by consuming, it has indirectly damaged the egg by making the egg's shell too thin which gets broken easily.

It controlled diseases like malaria: Since this option talks about positive attribute of DDT, this option stands invalid. This chemical compound controls mosquitoes attacking the crop.

It caused harm to human populations: DDT causes vomiting, tremors or shakiness, and seizures

It contained toxins: It contains moderate toxins.