Biodiversity
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Questions and Answers

What is the definition of biodiversity?

  • The total number of species on Earth
  • The diversity within ecosystems
  • The variety of life on Earth and its interdependence
  • The variability among living organisms from all sources (correct)

    • How many species have scientists estimated to be on Earth?

  • More than 2 million
  • 5 billion
  • 10-14 million (correct)
  • Tens of millions

    • What percentage of species have become extinct since the beginning?

  • 99.9% (correct)
  • 50%
  • 25%
  • 10%

    • What did the 1992 Earth Summit in Rio de Janeiro define biodiversity as?

    <p>Variability among living organisms from all sources</p> Signup and view all the answers

    Why is biodiversity important?

    <p>It is essential for the successful functioning of the ecosystem</p> Signup and view all the answers

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