Unit 4: Environmental Pollution
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Questions and Answers

What is the primary outcome of environmental pollution?

  • Harmful effects on various forms of life or property (correct)
  • Natural changes in the environment
  • No changes in the environment
  • Desirable changes in the environment

    • What are the components of pollution called?

  • Pollutants (correct)
  • Contamination agents
  • Environmental hazards
  • Pollution factors

    • What type of pollution occurs when the levels of gases, solids, or liquids in the atmosphere are high enough to cause harm?

  • Water pollution
  • Soil pollution
  • Noise pollution
  • Air pollution (correct)

    • What are primary air pollutants?

    <p>Harmful chemicals released directly from a source</p> Signup and view all the answers

    What is an example of a primary air pollutant?

    <p>Oxides of carbon</p> Signup and view all the answers

    What is produced from chemical reactions involving primary pollutants?

    <p>Secondary pollutants</p> Signup and view all the answers

    What is the estimated number of pieces of trash in the Great Pacific Garbage Patch?

    <p>1.8 trillion</p> Signup and view all the answers

    What percentage of ocean plastic pollution comes from just 20 countries?

    <p>80 percent</p> Signup and view all the answers

    What is the estimated time it takes for most plastic to degrade?

    <p>400 years</p> Signup and view all the answers

    Which two countries are responsible for the most ocean plastic pollution?

    <p>China and Indonesia</p> Signup and view all the answers

    What is a major consequence of plastic breaking down into microplastic?

    <p>It enters the food chain</p> Signup and view all the answers

    What is a suggested way to reduce ocean pollution?

    <p>Stopping human activities like bathing near water bodies</p> Signup and view all the answers

    What is the process by which water is purified in the RO method?

    <p>Forcing water through a semi permeable membrane</p> Signup and view all the answers

    What is the purpose of the Distillation method of water purification?

    <p>To purify water by boiling and condensing steam</p> Signup and view all the answers

    What is the goal of tertiary treatment in a waste water treatment plant?

    <p>To disinfect water using chlorine</p> Signup and view all the answers

    What is the purpose of grit removal in primary treatment of waste water?

    <p>To remove physical contaminants from water</p> Signup and view all the answers

    What is the purpose of controlling the excess use of fertilizers and pesticides in agriculture?

    <p>To reduce water pollution</p> Signup and view all the answers

    What is the purpose of not disposing non-biodegradable waste material such as plastic in water bodies?

    <p>To reduce water pollution</p> Signup and view all the answers

    What type of waste can be used for the production of manures and biogas?

    <p>Biodegradable waste</p> Signup and view all the answers

    What is the primary effect of soil pollution on land?

    <p>Reduces the aesthetic value of land</p> Signup and view all the answers

    What is the primary source of radioactive waste?

    <p>Nuclear power plants and nuclear testing</p> Signup and view all the answers

    What is the purpose of segregating urban waste into biodegradable and non-biodegradable waste products?

    <p>To reduce soil pollution</p> Signup and view all the answers

    What is the term for the use of plants to remove pollutants from the soil?

    <p>Phytoremediation</p> Signup and view all the answers

    What is one of the health effects of radioactive elements present in polluted soil?

    <p>Deformities in bones</p> Signup and view all the answers

    What is the frequency at which the human ear is most sensitive to sounds?

    <p>100 Hz</p> Signup and view all the answers

    What is the unit used to express sound levels, specifically for noise pollution measurements?

    <p>dB-A</p> Signup and view all the answers

    What is a non-auditory effect of noise pollution?

    <p>Anxiety</p> Signup and view all the answers

    What is a measure to control vehicular noise pollution?

    <p>Regularly servicing the engine</p> Signup and view all the answers

    What is a psychological effect of noise pollution?

    <p>Depression</p> Signup and view all the answers

    What is a measure to control industrial noise pollution?

    <p>Keeping machines well-serviced</p> Signup and view all the answers

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