Types of Resources and Pollution
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Questions and Answers

What are examples of directly available resources for humans?

  • Solar energy and fresh air (correct)
  • Iron and groundwater
  • Runoff of fertilizers and pesticides
  • Petroleum and modern crops

    • What is pollution and where does it come from?

  • Any addition to air and water that benefits the health of humans
  • Addition to soil that promotes the activities of living organisms
  • Any addition to air, water, soil, or food that threatens the health of humans or other living organisms (correct)
  • Natural elements that support the survival of humans and other living organisms

    • Where does most pollution from human activities occur?

  • In or near urban and industrial areas (correct)
  • In natural reserves and national parks
  • In rural and agricultural areas
  • In remote and uninhabited regions

    • What are examples of point sources of pollution?

    <p>Pollution from urban and industrial areas</p> Signup and view all the answers

    Why is it easier and cheaper to identify and control pollution from point sources than from nonpoint sources?

    <p>Nonpoint sources are widely dispersed and often difficult to identify</p> Signup and view all the answers

    What are the three factors that determine how severe the harmful effects of a pollutant are?

    <p>Chemical nature, concentration, persistence</p> Signup and view all the answers

    How is the concentration of a pollutant usually expressed?

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

    What are the two basic approaches to dealing with pollution mentioned in the text?

    <p>Preventing it from reaching the environment, cleaning it up if it does</p> Signup and view all the answers

    What is meant by 'persistence' of a pollutant?

    <p>How long it stays in the air, water, soil, or body</p> Signup and view all the answers

    What are the unwanted effects of pollutants mentioned in the text?

    <p>Disruption of life-support systems, damage to wildlife and human health, nuisances</p> Signup and view all the answers

    Which of the following is considered as a nonpoint source of pollution?

    <p>Pesticides sprayed into the air or blown by the wind</p> Signup and view all the answers

    What is the significance of identifying and controlling pollution from point sources?

    <p>It is more cost-effective to control pollution from point sources</p> Signup and view all the answers

    Which of the following is an example of directly available resource for humans?

    <p>Fertile soil</p> Signup and view all the answers

    What type of harm do pollutants from nonpoint sources typically cause?

    <p>Diffuse and widespread harm to the environment</p> Signup and view all the answers

    Where does most pollution from human activities occur?

    <p>In or near urban and industrial areas</p> Signup and view all the answers

    Which factor determines the chemical nature of a pollutant?

    <p>How active and harmful it is to living organisms</p> Signup and view all the answers

    In what units is the concentration of a pollutant sometimes expressed?

    <p>Parts per million (ppm)</p> Signup and view all the answers

    What makes a pollutant nondegradable?

    <p>Its chemical nature</p> Signup and view all the answers

    What are the two basic approaches to dealing with pollution?

    <p>Prevent and reduce</p> Signup and view all the answers

    What type of pollutants take decades or longer to degrade?

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

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