IGCSE O Level Biology MCQs (O Level) From Textbook

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IGCSE O Level Biology MCQs – Practice Test 18 (Chapter 7)

Effects of Human Activity on Ecosystem MCQ with Answers PDF Download – Test 18

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The Effects of Human Activity on Ecosystem Multiple Choice Questions (MCQ Quiz) with Answers PDF (Effects of Human Activity on Ecosystem MCQ PDF e-Book) download Ch. 7-18 to learn IGCSE O Level Biology Course. Solve Eutrophication: O Level Biology Multiple Choice Questions (MCQs), Effects of Human Activity on Ecosystem quiz answers PDF to study online courses. Download the Effects of Human Activity on Ecosystem MCQ App – Free IGCSE O Level Biology MCQ App to learn o level biology, causes of pollution: biology, pollution: bod and eutrophication, recycling: waste disposal career test for ACT subject test tutoring.

The MCQ: Dead algae and plants are decomposed by; "Effects of Human Activity on Ecosystem MCQ" App (Android, iOS) with answers: fungi, bacteria, virus, and detritivores to study online courses. Practice Biology Practice Test Quiz Questions, download Apple Book (Free Chapter) for online degree programs.

Effects of Human Activity on Ecosystem MCQ with Answers PDF Download: Quiz 18

MCQ: 86

Dead algae and plants are decomposed by

  1. bacteria
  2. fungi
  3. virus
  4. detritivores
MCQ: 87

In ecosystem ,Silting means

  1. trees do not retain water
  2. eroded soil gets deposited in rivers and streams
  3. water levels rise rapidly in rivers
  4. all of above
MCQ: 88

Acidic waste products can be made less harmful if treated with

  1. water
  2. alkalis
  3. base
  4. sulphuric acid
MCQ: 89

The word BOD refers to the

  1. Bidding of Dermatology
  2. Binding of Dirt
  3. Biochemical occupied Date
  4. Biochemical Oxygen demand
MCQ: 90

Conserving metals may decrease

  1. environmental pollution only
  2. waste disposal only
  3. minerals in the crust
  4. environmental pollution and waste disposal

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

Effects of Human Activity on Ecosystem MCQs App

O Level Biology MCQs Apps (iOS & Android)

O Level Biology MCQs App

Zoology MCQ Apps (iOS & Android)

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10th Grade Biology MCQ App