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O Level Biology e-Book's MCQs - Complete

Pesticides: O Level Biology App's Quiz & e-Book Download - 1710

MCQ:

Substances which can remain in the soil for many years are known as

  1. microorganisms
  2. insecticides
  3. dichloro-triphenyl dichloroethane
  4. dichloro-diphenyl trichloroethane

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Pesticides O Level Biology Textbook App: Free Download (iOS & Android)

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Pesticides O Level Biology App (Android & iOS)

Pesticides O Level Biology App (Android & iOS)

O Level Biology App (Android & iOS)

O Level Biology App (iOS & Android)

Zoology App (Android & iOS)

Zoology App (Android & iOS)

College Biology App (Android & iOS)

College Biology App (iOS & Android)