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IGCSE O Level Biology MCQs – Practice Test 6 (Chapter 7)

Effects of Human Activity on Ecosystem Multiple Choice Questions with Answers PDF – Test 6

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Free Effects of Human Activity on Ecosystem MCQ App Download (iOS & Android): Disadvantages of pesticides includes; MCQ with answers: higher yield of crops, healthier crops, non-biodegradable pesticides, and availability of more food. Practice GCE Biology Quiz Questions, download Apple Book (Free Chapter) to improve educational achievement.

Effects of Human Activity on Ecosystem MCQ with Answers PDF Download – with AnswersTest 6

MCQ 26: In terms of tolerance range for oxygen (O2), Tubifex worms and fish are:

  1. differ
  2. alike
  3. approximately same
  4. opposite

MCQ 27: Disadvantages of pesticides includes:

  1. healthier crops
  2. higher yield of crops
  3. non-biodegradable pesticides
  4. availability of more food

MCQ 28: Profuse growth of algae occurs due to:

  1. hydrogen sulphide in water
  2. nitrates and phosphates in water
  3. carbon dioxide in water
  4. chlorine in water

MCQ 29: In which category of resources, metal lies:

  1. renewable resource
  2. non-renewable resource
  3. artificial resource
  4. element

MCQ 30: Cinchona is used in making of:

  1. quinine
  2. morphine
  3. pyrethrum
  4. DDT

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