Organisms in Ecosystems
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Questions and Answers

Which level is most often used to define adverse effects in ecological risk characterization?

  • Individual level
  • Population level (correct)
  • Ecosystem level
  • Organismal level
  • What is the basis for adverse effects in human health protection?

  • Individuals (correct)
  • Populations
  • Ecosystems
  • Organisms
  • Which organisms in the ecosystem are usually considered individually unessential?

  • Endangered species
  • Organisms in food chains (correct)
  • Transitory organisms
  • Persistent populations
  • When are organisms in the environment given similar protection to humans?

    <p>When they are rare or endangered</p> Signup and view all the answers

    What is the aim of ecological risk assessment?

    <p>Protecting ecosystem functions</p> Signup and view all the answers

    Which level is typically used to define adverse effects in ecological risk characterization?

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

    Why are organisms in the ecosystem usually considered individually unessential?

    <p>Because they are part of a food chain</p> Signup and view all the answers

    When are organisms in the environment given similar protection to humans?

    <p>When they are rare, threatened, endangered, or long-lived species</p> Signup and view all the answers

    What is the focus of ecological risk assessment?

    <p>Protecting ecosystem functions performed by populations and communities</p> Signup and view all the answers

    What are the types of endpoints considered in ecological risk assessment?

    <p>Both functional or process-based and structure-based endpoints</p> Signup and view all the answers

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