Environmental impacts of deforestation
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Questions and Answers

What is a consequence of reduced forest areas on the greenhouse effect?

  • Enhanced greenhouse effect (correct)
  • Increased oxygen production
  • Decreased temperatures globally
  • Enhanced absorption of CO2
  • How much carbon from CO2 is estimated to be stored by tropical rainforests each year?

  • 48 billion tonnes (correct)
  • 50 billion tonnes
  • 30 billion tonnes
  • 10 billion tonnes
  • What has happened to the amount of CO2 absorbed by the Amazon rainforest since the 1990s?

  • It has doubled
  • It has increased by 50%
  • It is 30% less than in the 1990s (correct)
  • It has remained unchanged
  • What effect does deforestation have on global temperatures?

    <p>It raises global temperatures by releasing stored carbon</p> Signup and view all the answers

    What role do trees play in mitigating climate change?

    <p>They absorb CO2 from the atmosphere</p> Signup and view all the answers

    Study Notes

    Deforestation and Global Warming

    • Deforestation contributes to the enhanced greenhouse effect.
    • Fewer trees mean less carbon dioxide is absorbed from the atmosphere.
    • This results in increased atmospheric carbon dioxide concentrations.
    • Increased greenhouse gases trap heat in the atmosphere leading to global warming.
    • Tropical rainforests store an estimated 48 billion tonnes of carbon dioxide yearly.
    • Deforestation releases stored carbon, further intensifying the greenhouse effect and global warming.
    • The Amazon rainforest absorbs one-third of the carbon dioxide absorbed by all land on Earth.
    • Deforestation has reduced the Amazon's carbon absorption by 30% since the 1990s.

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    Description

    This quiz explores the relationship between deforestation and global warming. Discover how reduced tree cover affects carbon dioxide absorption and contributes to the enhanced greenhouse effect. Understand the critical role of tropical rainforests, particularly the Amazon, in regulating atmospheric carbon levels.

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