A) soil and water
B) air and soil
C) crops and air
D) air and water
Correct Answer: A
Solution :
Spraying of DDT on crops produces pollution of water and soil. DDT was first synthesized by German graduate student in 1873. In 1939 Dr. Paul Muller rediscovered it, DDT is a broad spectrum and most famous pesticide of the world. In 1950 and 1960 got high yield of crops by the use of DDT. Today DDT is banned due to its persist ant and biomagnifying property.
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