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Biodiversity under pressure and how we protect it

10th grade (Year 11 in England) · 16 questions · Common Core: NGSS.HS-LS2-7, NGSS.HS-LS4-6 · England: GCSE Combined Science: Ecology

Name

Date

Score/ 16

  1. Question 1

    Draining peat bogs to sell peat as garden compost harms the climate. Why?

    • A. It makes the ozone layer thicker
    • B. It creates acid rain
    • C. Decaying or burned peat releases stored carbon as carbon dioxide
    • D. Peat absorbs too much oxygen

  2. Question 2

    A survey found 200 hedgehogs counted in a survey in 2010 and 170 in 2024. What was the percentage decrease?

    Answer%

  3. Question 3

    Biodiversity: which statement is NOT true?

    • A. Breeding programmes can help protect endangered species.
    • B. Global warming is changing where some species can live.
    • C. Biodiversity means the number of individuals of one species.
    • D. Fertiliser running into lakes can cause algae to grow and oxygen to fall.

  4. Question 4

    Rewilding projects reintroduce species such as beavers. What can beavers do for an ecosystem?

    • A. Their dams create wetlands that support many other species and reduce flooding downstream
    • B. They make rivers flow faster
    • C. They remove all fish
    • D. They have no effect

  5. Question 5

    A survey found 200 breeding pairs of a bird species in 2010 and 180 in 2024. What was the percentage decrease?

    Answer%

  6. Question 6

    Biodiversity: which statement is NOT true?

    • A. Deforestation reduces biodiversity and adds carbon dioxide to the air.
    • B. Landfill sites increase the space for wildlife.
    • C. Fertiliser running into lakes can cause algae to grow and oxygen to fall.
    • D. Breeding programmes can help protect endangered species.

  7. Question 7

    Draining peat bogs to sell peat as garden compost harms the climate. Why?

    • A. It makes the ozone layer thicker
    • B. Peat absorbs too much oxygen
    • C. It creates acid rain
    • D. Decaying or burned peat releases stored carbon as carbon dioxide

  8. Question 8

    A survey found 120 hectares of rainforest in 2010 and 102 in 2024. What was the percentage decrease?

    Answer%

  9. Question 9

    Biodiversity: which statement is NOT true?

    • A. Breeding programmes can help protect endangered species.
    • B. Biodiversity means the number of individuals of one species.
    • C. Deforestation reduces biodiversity and adds carbon dioxide to the air.
    • D. Global warming is changing where some species can live.

  10. Question 10

    Rewilding projects reintroduce species such as beavers. What can beavers do for an ecosystem?

    • A. They make rivers flow faster
    • B. Their dams create wetlands that support many other species and reduce flooding downstream
    • C. They remove all fish
    • D. They have no effect

  11. Question 11

    A survey found 400 breeding pairs of a bird species in 2010 and 300 in 2024. What was the percentage decrease?

    Answer%

  12. Question 12

    Biodiversity: which statement is NOT true?

    • A. Landfill sites increase the space for wildlife.
    • B. Breeding programmes can help protect endangered species.
    • C. Deforestation reduces biodiversity and adds carbon dioxide to the air.
    • D. Fertiliser running into lakes can cause algae to grow and oxygen to fall.

  13. Question 13

    Draining peat bogs to sell peat as garden compost harms the climate. Why?

    • A. It creates acid rain
    • B. Peat absorbs too much oxygen
    • C. It makes the ozone layer thicker
    • D. Decaying or burned peat releases stored carbon as carbon dioxide

  14. Question 14

    A survey found 120 hectares of rainforest in 2010 and 102 in 2024. What was the percentage decrease?

    Answer%

  15. Question 15

    Biodiversity: which statement is NOT true?

    • A. Fertiliser running into lakes can cause algae to grow and oxygen to fall.
    • B. Landfill sites increase the space for wildlife.
    • C. Breeding programmes can help protect endangered species.
    • D. Deforestation reduces biodiversity and adds carbon dioxide to the air.

  16. Question 16

    Draining peat bogs to sell peat as garden compost harms the climate. Why?

    • A. Peat absorbs too much oxygen
    • B. It creates acid rain
    • C. Decaying or burned peat releases stored carbon as carbon dioxide
    • D. It makes the ozone layer thicker

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Answer key: Biodiversity under pressure and how we protect it

  1. 1. C. Decaying or burned peat releases stored carbon as carbon dioxide

  2. 2. 15 %

  3. 3. C. Biodiversity means the number of individuals of one species.

  4. 4. A. Their dams create wetlands that support many other species and reduce flooding downstream

  5. 5. 10 %

  6. 6. B. Landfill sites increase the space for wildlife.

  7. 7. D. Decaying or burned peat releases stored carbon as carbon dioxide

  8. 8. 15 %

  9. 9. B. Biodiversity means the number of individuals of one species.

  10. 10. B. Their dams create wetlands that support many other species and reduce flooding downstream

  11. 11. 25 %

  12. 12. A. Landfill sites increase the space for wildlife.

  13. 13. D. Decaying or burned peat releases stored carbon as carbon dioxide

  14. 14. 15 %

  15. 15. B. Landfill sites increase the space for wildlife.

  16. 16. C. Decaying or burned peat releases stored carbon as carbon dioxide