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

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Effects of Human Activity on Ecosystem MCQs with Answers PDF Download: MCQ Quiz 5

MCQ 21: Chronic bronchitis and emphysema are more vulnerable to:

  1. acid rains
  2. water pollutants
  3. smog
  4. nitrogen oxides

MCQ 22: Carboxyhemoglobin is formed if:

  1. CO2 is allowed to mix with hemoglobin
  2. if CO is allowed to react with hemoglobin
  3. if long term exposure to lead and lead poisoning occurs
  4. if carbon is allowed to react with hemoglobin

MCQ 23: Large gene pool enables:

  1. conservation of natural resources
  2. depletion of natural resources
  3. conservation of artificial resources
  4. depletion of artificial resources

MCQ 24: 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

MCQ 25: If water containing DDT (dichloro-diphenyl-trichloroethane: C14H9O5) is fed upon by cattle, it will:

  1. get stored in the liver
  2. get stored in the fatty tissues of animals
  3. be excreted out with urine
  4. get stored in the muscle fibers

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