O Level Courses

O Level Biology App's Tests

O Level Biology e-Book's MCQs - Complete

GCE O Levels Biology MCQ App Download & e-Book - 419

MCQ:

Use of non-fossil fuel in factory may

  1. help in lesser air pollution
  2. increase pollution due to chimney fumes when fossil fuel is burnt
  3. lower the air quality in densely populated areas
  4. increase land pollution

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GCE O Levels Biology App (Android & iOS)

GCE O Levels Biology App (Android & iOS)

O Level Biology App (Android & iOS)

O Level Biology App (iOS & Android)

9th Grade Biology App (Android & iOS)

9th Grade Biology App (Android & iOS)

Cell Biology App (Android & iOS)

Cell Biology App (iOS & Android)