IGCSE O Level Biology Notes App | Effects of Human Activity on Ecosystem Notes e-Book PDF | 4
IGCSE O Level Biology MCQs (O Level) From Textbook

IGCSE O Level Biology Exam MCQs – Practice Test 4 (Chapter 7)

Effects of Human Activity on Ecosystem Notes Questions with Answers PDF Download – Test 4

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Effects of Human Activity on Ecosystem Test Questions and Answers PDF Download: MCQ 4

MCQ 16: Arsenic is an example of:

  1. organic waste
  2. inorganic waste
  3. acid
  4. base

MCQ 17: If the trees are cleared, annual rain fall:

  1. increases causing flood
  2. decreases and the area becomes dry
  3. decreases but increases moisture
  4. increases but decreases moisture

MCQ 18: Advantages of using pesticides include:

  1. healthier crops
  2. better yield
  3. more food and profit for farmers
  4. all of above

MCQ 19: Conservation of resources can be tackled through:

  1. human population control only
  2. by reducing pollution only
  3. increasing use of resources
  4. human population control and by reducing pollution

MCQ 20: In Ecosystem pyrethrum is used in:

  1. insecticides
  2. quinine
  3. morphine
  4. antibiotics

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