IGCSE O Level Biology Study App | Pollution Causes MCQs e-Book PDF

IGCSE O Level Biology MCQs (O Level) From Textbook

IGCSE O Level Biology MCQs – Mock Test 320

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Learn Pollution Causes MCQ with Answers PDF (Pollution Causes Multiple Choice Questions (MCQs) PDF e-Book) download Ch. 7-320 to study IGCSE O Level Biology Practice Tests. Study Effects of Human Activity on Ecosystem Test PDF, Pollution Causes Multiple Choice Questions (MCQ Quiz) to support flexible learning. Free IGCSE O Level Biology MCQs App: Download the Pollution Causes Study App to study pollution causes, heroin effects, disadvantages of excess vitamins, hydrolysis test prep for biology online academics.

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Pollution Causes MCQ – Mock Test 320 PDF Download

MCQ 1596: Volcanic eruptions, biological decay and forest fires releases:

  1. Carbon monoxide in air
  2. carbon dioxide in air
  3. sulpher dioxide in air
  4. ammonia in air

MCQ 1597: AIDS is caused due to:

  1. sharing injection needles
  2. transmission of immunodeficiency virus
  3. unsterilized injection needles
  4. all of above

MCQ 1598: Over-consumption of Vitamins may result in:

  1. scurvy
  2. beriberi
  3. rickets
  4. death

MCQ 1599: Water acts as a reactant in:

  1. polymerization
  2. condensation
  3. oxidation
  4. hydrolysis

MCQ 1600: Dorsal root of spinal nerve contains:

  1. receptor neurons
  2. effector neurons
  3. motor neurons
  4. none of others

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