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IGCSE O Level Biology Exam Prep: Practice Test 20 (Chapter 7)

Effects of Human Activity on Ecosystem Notes Questions & Answers PDF Download - 20

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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. 7-20 to study IGCSE O Level Biology Course. Practice Pollution: Inorganic Wastes as Cause Quiz, Effects of Human Activity on Ecosystem MCQ questions and answers PDF for schools that offer online degrees. The Effects of Human Activity on Ecosystem Quiz App Download: Free IGCSE O Level Biology App to study pollution: sewage as cause, pollution causes, pollution: causes of pollution, pollution: bod and eutrophication career test for accredited online colleges.

The Quiz: People may become blind due to; "Effects of Human Activity on Ecosystem" App (iOS, Android) with answers: mercury poisoning, lead poisoning, chlorofluorocarbons exposure, and ozone depletion to learn online IGCSE courses. Study Introduction to Biology Quiz Questions, download Google Book (Free Sample) for schools that offer online degrees.

Effects of Human Activity on Ecosystem Exam Questions and Answers PDF Download: Test 20

MCQ: 96

People may become blind due to

  1. Lead poisoning
  2. Mercury poisoning
  3. Chlorofluorocarbons exposure
  4. Ozone depletion
MCQ: 97

Foul smelling gases include

  1. Hydrogen Sulfide (H2S) only
  2. Ammonia (NH3)
  3. Carbon dioxide (CO2) only
  4. Hydrogen Sulfide (H2S) and Ammonia (NH3)
MCQ: 98

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: 99

Aluminum (Al) salts may become fatal to fish if allowed to react with

  1. soil in the rivers
  2. soil in the lakes
  3. fossil fuel
  4. gaseous pollutants like acid rains
MCQ: 100

Fish die as a result of water pollution due to

  1. less BOD
  2. more tolerance range for oxygen
  3. narrow tolerance range for oxygen
  4. zero tolerance range for oxygen

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Effects of Human Activity on Ecosystem Notes App (Android & iOS)

Effects of Human Activity on Ecosystem Notes App

O Level Biology Notes App (iOS & Android)

O Level Biology Notes App

A level Biology Notes App (iOS & Android)

A level Biology Notes App

College Biology Notes App (Android & iOS)

College Biology Notes App