Answered

In the late 1930s, the insecticide DDT was developed. Which outcome was most likely
the result of using DDT?
Select one:
Oa. Many insect species became extinct, and so bat populations increasd.
O b. Certain insects became endangered, and so laws were passed to protect them.
Some insects were naturally resistant to DDT, and thus they survived to produce
offspring that were resistant.
O d. Decreasing amounts of DDT were required to be effective, and eventually it was
no longer needed.



Answer :

GinnyAnswer

Final answer:

Insects developed resistance to DDT, leading to the need for substitutes and illustrating the concepts of bioaccumulation and biomagnification.


Explanation:

Some insects were naturally resistant to DDT, and thus they survived to produce offspring that were resistant. This phenomenon of insect resistance to DDT led to the development of substitutes like dieldrin and methoxychlor, which also faced resistance over time. The ecological impacts of DDT, including bioaccumulation and biomagnification, led to the banning of DDT in many parts of the world.


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