be done by j. Chemical control of pest may (a) Birds (6) D.D.T (c) Sodium nitrote.
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Answer: D.D.T
Explanation: D.D.T or Dichlorodiphenyltrichloroethane is an insecticide/pesticide used in agriculture commonly during 1940-1960 until it was banned in 2004, due to the harmful impact it caused to the environment. Limited amount of D.D.T is still used due to it's effectiveness in mosquito controlling to reduce malarial infections.
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