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IGCSE O Level Biology Study Guide: Practice Test 9 (Chapter 7)

Effects of Human Activity on Ecosystem Multiple Choice Questions (MCQs) PDF Download - 9

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The Effects of Human Activity on Ecosystem Multiple Choice Questions (MCQs) with Answers PDF (Effects of Human Activity on Ecosystem MCQs PDF e-Book) download Ch. 7-9 to study IGCSE O Level Biology Course. Practice Herbicides: O Level Biology MCQs, Effects of Human Activity on Ecosystem quiz questions and answers PDF for free online classes. The Effects of Human Activity on Ecosystem MCQs App Download: Free IGCSE O Level Biology App to study atmospheric pollution, recycling: waste disposal career test to learn online IGCSE courses.

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Effects of Human Activity on Ecosystem MCQs with Answers PDF Download: MCQ Quiz 9

MCQ: 41

Miscarriages in women may be due to intake of

  1. carbon dioxide
  2. polluted water
  3. water containing dioxins
  4. DDT
MCQ: 42

Nitrates (NO3-1) and phosphates (PO4-3) reach underground water with

  1. acid rains
  2. fertilizers washed away by rain water
  3. decomposition of organic compounds by anaerobic bacteria
  4. decomposition of organic compounds by aerobic bacteria
MCQ: 43

Central heating systems can be run through

  1. more deforestation
  2. burning of garbage
  3. lesser incinerators
  4. cooling water pipelines
MCQ: 44

Loss of control of hand and feet occurs due to

  1. lead poisoning (Pb)
  2. sulfur dioxide (SO2)
  3. nitrogen oxide (NO)
  4. carbon dioxide (CO2)
MCQ: 45

Metals is produced as waste in industries like

  1. skiing
  2. mining
  3. electroplating
  4. digging

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Effects of Human Activity on Ecosystem MCQ App (Android & iOS)

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