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IGCSE O Level Biology Entrance Exam: Practice Test 14 (Chapter 7)

Effects of Human Activity on Ecosystem Multiple Choice Questions (MCQ) PDF Download - 14

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Effects of Human Activity on Ecosystem Exam Questions and Answers PDF Download: Test 14

MCQ: 66

Eutrophication in an ecosystem is a

  1. good sign for ecosystem
  2. bad sign for ecosystem
  3. neutral sign for ecosystem
  4. dual-sided sign for ecosystem
MCQ: 67

An excellent habitat for bacterial growth is

  1. chlorofluorocarbons based products
  2. burning of garbage
  3. untreated sewage
  4. all of above
MCQ: 68

If heat radiated from the Earths surface is retained, the outcome will be

  1. formation of smog
  2. green house effect
  3. van der Walls forces of attraction among smoke particles
  4. all of above
MCQ: 69

Drift nets capture fish

  1. discriminately
  2. indiscriminately
  3. in both ways
  4. drift nets don't capture fish
MCQ: 70

Physical, mental abnormalities and risks of cancer are increased due to

  1. dichlorophenyl trichloroethane (DDT)
  2. biochemical oxygen demand (BOD)
  3. dioxins
  4. greenhouse effect

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

Effects of Human Activity on Ecosystem MCQs App

O Level Biology MCQs App (iOS & Android)

O Level Biology MCQs App

MCAT Biology MCQ App (iOS & Android)

MCAT Biology MCQ App

10th Grade Biology MCQ App (Android & iOS)

10th Grade Biology MCQ App