The Decline of Earth's Species

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Questions and Answers

Which human activity is said to have led to the extinction of more than 2,000 species of native birds on tropical Pacific Islands?

  • Hunting
  • Colonization (correct)
  • Deforestation
  • Pollution

What is the IUCN Red List (2004) documenting?

  • The extinction of 784 species in the last 500 years (correct)
  • The threat of extinction faced by 15,500 species
  • The decline of biological wealth
  • The vulnerability of amphibians to extinction

Which group of organisms appears to be more vulnerable to extinction according to careful analysis of records?

  • Mammals
  • Amphibians (correct)
  • Gymnosperms
  • Birds

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