Lesson 4.7.3.5

4.7.3.5 Global warming Quiz: AQA Biology, Unit 7

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 4.7.3.5, Global warming: 20 multiple choice questions for the AQA GCSE Biology (8461), Unit 7: Ecology, written with Revision Ninja.

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The 20 questions

  1. Which two greenhouse gases are increasing in the atmosphere and driving global warming?

    • Carbon dioxide, methane
    • Oxygen, nitrogen
    • Helium, hydrogen
    • Carbon monoxide, argon

  2. What is the scientific consensus on global warming based on?

    • Systematic reviews
    • Political debates
    • Media reports
    • Individual opinions

  3. Which term describes the warming of Earth caused by rising levels of carbon dioxide and methane in the atmosphere?

    • Ozone thinning
    • Global warming
    • Acid rain
    • Soil erosion

  4. What term describes widespread agreement among scientists based on systematic reviews of evidence?

    • Experimental control
    • Scientific consensus
    • Peer review
    • Scientific hypothesis

  5. Why is evidence about global warming often complex and incomplete?

    • Many interacting factors
    • Flawed equipment
    • Lack of data
    • No peer review

  6. What is currently happening to atmospheric levels of carbon dioxide and methane?

    • They are increasing
    • They remain constant
    • They fluctuate randomly
    • They are decreasing

  7. What atmospheric phenomenon is directly driven by rising levels of carbon dioxide and methane?

    • Eutrophication
    • Global warming
    • Ozone depletion
    • Acid rain

  8. Who checks scientific research articles before they can be published in a journal?

    • Government officials
    • The general public
    • Other expert scientists
    • Journalists

  9. Carbon dioxide rises from 300 ppm to 420 ppm. By how much has it increased?

    • 420 ppm
    • 120 ppm
    • 150 ppm
    • 90 ppm

  10. Compared to a single study, what provides stronger scientific evidence for climate change?

    • Unpublished blog posts
    • Media reports
    • Single opinions
    • Systematic reviews

  11. Why is claiming temperature alone causes species distribution changes scientifically inaccurate?

    • Temperature never changes
    • Data is falsified
    • Species cannot migrate
    • Multiple factors interact

  12. Which dataset provides the most reliable evidence when studying global temperature trends?

    • Long-term large samples
    • Single-location studies
    • Short-term small samples
    • Anecdotal observations

  13. What happens to species that cannot adapt or migrate as temperatures rise?

    • Increased genetic diversity
    • Extinction or decline
    • Rapid population growth
    • Unchanged distribution

  14. Why do global climate models predict trends rather than exact local weather?

    • Constant greenhouse gases
    • Complex variable interactions
    • Flawed satellite data
    • Incorrect mathematical models

  15. Apart from carbon dioxide, which main greenhouse gas contributes significantly to global warming?

    • Nitrogen gas
    • Sulfur dioxide
    • Carbon monoxide
    • Methane

  16. Carbon dioxide rises from 280 ppm to 420 ppm. What is the percentage increase?

    • 67%
    • 50%
    • 33%
    • 140%

  17. Why do the biological impacts of global warming differ across different geographical regions?

    • Differing regional conditions
    • Equal species tolerances
    • Uniform temperature rises
    • Identical global ecosystems

  18. What makes evidence about shifting species ranges complex to interpret conclusively?

    • Constant environmental conditions
    • Lack of species
    • Multiple contributing factors
    • Instantaneous evolution

  19. What is the main advantage of conducting a systematic review of scientific studies?

    • Reduces individual bias
    • Guarantees instant proof
    • Requires less evidence
    • Eliminates all data

  20. CO2 doubles from 300 ppm to 600 ppm. What is the percentage increase?

    • 50%
    • 200%
    • 100%
    • 300%

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