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 (A)</p> Signup and view all the answers

What is the aim of ecological risk assessment?

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

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

<p>Population (D)</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 (D)</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 (C)</p> Signup and view all the answers

What is the focus of ecological risk assessment?

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

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