Effects of Human Activity on Ecosystem Study App | IGCSE O Level Biology MCQ e-Book PDF

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IGCSE O Level Biology MCQs – Practice Test 2 (Chapter 7)

Effects of Human Activity on Ecosystem MCQ with Answers PDF Download – Test 2

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Effects of Human Activity on Ecosystem MCQ with Answers PDF Download: Quiz 2

MCQ 6: Bacteria grow and multiply rapidly in:

  1. aerobic environment
  2. anaerobic environment
  3. water
  4. soil

MCQ 7: Gaseous pollutants may be carried to other countries to:

  1. form acid rain
  2. cause acidification of soil
  3. form alkaline rain
  4. cause water pollution

MCQ 8: Non-renewable sources do not include:

  1. fossil fuels
  2. minerals
  3. air
  4. water

MCQ 9: Desertification is caused due to:

  1. overgrazing
  2. topsoil is eroded
  3. rapid water evaporation from the soil
  4. all of above

MCQ 10: Forests can not be conserved if:

  1. timber trees are cut down worldwide
  2. timber trees are cut down selectively
  3. if rate of plantation exceeds rate of cutting trees
  4. new seedlings are planted and grown trees are cut

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