Question

Why is the prolonged use of DDT not desirable?
Ans: Prolonged use of pesticides such as DDT may have various disadvantages like:
Ø It may affect wildlife in the area they are sprayed. Continuous usage of pesticides can lead to ability of resistance among pests.
Ø Excess usage of pesticides can cause soil and water pollution.
Ø They may also enter food chains from one level to another and may cause
infections of skin and respiratory system


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