In 1939, the use of DDT (a powerful synthetic chemical) as an insecticide was discovered. The United States adopted its widespread use, producing up to 100 million kilograms per year (200 million pounds per year). Twenty years later, severe side effects started to be reported as a result of DDT use. Which was an advantage of using DDT?
Answer
A
insect and pest populations decreased
B
birth defect rates increased
C
cancer rates increased
D
fertility rates decreased
Explanation
DDT was used as an insecticide, so its intended advantage was reducing insect and pest populations. The other choices describe harmful side effects, not benefits of using DDT.
AI-written and checked against the verified answer.