IGCSE O Level Biology MCQs (O Level) From Textbook

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IGCSE O Level Biology MCQs – Practice Test 15 (Chapter 7)

Effects of Human Activity on Ecosystem Quiz with Answers PDF Download – Test 15

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The Effects of Human Activity on Ecosystem Quiz Questions and Answers PDF (Effects of Human Activity on Ecosystem Quiz PDF e-Book) download Ch. 7-15 to study IGCSE O Level Biology Course. Practice Eutrophication: O Level Biology Quiz, Effects of Human Activity on Ecosystem MCQ questions and answers PDF for best online ACT prep class. Download the IGCSE O Level Biology Quiz App – Free Effects of Human Activity on Ecosystem Quiz App to study pollution: smog as cause, pollution: sewage as cause, pollution: bod and eutrophication, causes of pollution: biology career test for online college courses.

The MCQ: Use of chemical fertilizers causes; "IGCSE O Level Biology& Quizquot; App (iOS, Android) with answers: water pollution, gaseous pollution, air pollution, and soil pollution for online certificate programs. Study Causes of Pollution: Biology Quiz Questions, download Google Book (Free Chapter) for best online ACT prep class.

Effects of Human Activity on Ecosystem Exam Questions and Answers PDF Download: Test 15

MCQ: 71

Use of chemical fertilizers causes

  1. gaseous pollution
  2. water pollution
  3. air pollution
  4. soil pollution
MCQ: 72

Major gaseous man-caused pollutant is

  1. carbon dioxide
  2. carbon monoxide
  3. sulphur dioxide
  4. nitrogen oxides
MCQ: 73

Untreated sewage may cause

  1. outbreak of epidemic
  2. cholera outbreaks
  3. typhoid outbreaks
  4. all of above
MCQ: 74

BOD measures the amount of

  1. bacteria in a given sample of water
  2. algae being decomposed in a given sample
  3. oxygen bacteria need to decompose organic matter in a given sample
  4. oxygen bacteria need to decompose organic matter in a given sample in a fixed period of time
MCQ: 75

Reaction between sulfur dioxide and oxygen results in

  1. sulfuric acid only
  2. acid rain only
  3. alkali rain
  4. sulfuric acid and acid rain

Effects of Human Activity on Ecosystem Study Material – IGCSE O Level Biology App & e-Book Quizzes

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What Are Enzymes MCQs
Effects of Human Activity on Ecosystem MCQs
Sexual Reproduction in Animals MCQs

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Effects of Human Activity on Ecosystem Quiz Apps (Android & iOS)

Effects of Human Activity on Ecosystem Quiz App

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