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Why is biodiversity threatened and how can we protect it?: OCR GCSE Combined Science B questions

Every OCR GCSE Combined Science B exam question on B6.3 Why is biodiversity threatened and how can we protect it?, 2018–2025, with its mark scheme and examiner’s report.

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2,688 questions

  1. Q4(b)(i)

    June 2025 · Biology Paper 5 Higher

    1 markB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 4

  2. Q4(b)(ii)

    June 2025 · Biology Paper 5 Higher

    2 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 4

  3. Q4(c)

    June 2025 · Biology Paper 5 Higher

    4 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 4

  4. Q5(a)

    June 2024 · Biology Paper 1 Foundation

    3 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗

  5. Q5(b)(ii)

    June 2024 · Biology Paper 1 Foundation

    1 markB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗

  6. Q5(b)(iii)

    June 2024 · Biology Paper 1 Foundation

    1 markB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗

  7. Q8(b)

    June 2024 · Biology Paper 5 Higher

    4 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗

  8. Q4(a)

    June 2023 · Biology Paper 1 Foundation

    6 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 4

  9. Q5(b)

    June 2022 · Biology Paper 1 Foundation

    2 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 5

  10. Q5(c)

    June 2022 · Biology Paper 1 Foundation

    1 markB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 5

  11. Q5(b)

    June 2022 · Biology Paper 5 Higher

    2 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 5

  12. Q5(c)

    June 2022 · Biology Paper 5 Higher

    1 markB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 5

  13. Q5(d)

    June 2022 · Biology Paper 5 Higher

    3 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 5

  14. Q6(a)

    November 2021 · Combined Science Paper 4 Foundation

    6 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 6

  15. Q6(b)

    November 2021 · Combined Science Paper 4 Foundation

    2 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 6

  16. Q8(a)

    November 2021 · Biology Paper 5 Higher

    3 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 8

  17. Q8(b)

    November 2021 · Biology Paper 5 Higher

    4 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 8

  18. Q4(c)

    November 2020 · Biology Paper 1 Foundation

    3 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗

  19. Q2(a)(v)

    June 2019 · Biology Paper 5 Higher

    2 marksB6.3 Why is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 2
All 19 questions on Why is biodiversity threatened and how can we protect it?, as a list
  1. June 2025, Biology Paper 5 Higher, Q4(b)(i) (1 mark): Tigers are an endangered species. Describe two human activities that could have caused tigers to become endangered. 1 2 [1]
  2. June 2025, Biology Paper 5 Higher, Q4(b)(ii) (2 marks): It is estimated that: • in 1900, there were 100 000 tigers in India • by 1972, there were only 1827 tigers in India. Calculate the percentage decrease in the nu
  3. June 2025, Biology Paper 5 Higher, Q4(c) (4 marks): Scientists are trying to conserve tigers in India. This has the benefit of protecting them from extinction. Explain one other benefit and one challenge of conse
  4. June 2024, Biology Paper 1 Foundation, Q5(a) (3 marks): Complete the table to show which things are part of the biodiversity of an area. Tick (✓) one box in each row. Part of Not part of biodiversity biodiversity abi
  5. June 2024, Biology Paper 1 Foundation, Q5(b)(ii) (1 mark): Riley works in conservation on the Galápagos Islands. Riley wants to encourage local people to stop keeping goats. Suggest one reason why this may be a challeng
  6. June 2024, Biology Paper 1 Foundation, Q5(b)(iii) (1 mark): Protecting the biodiversity of the forest helps the Galápagos tortoises to survive. Write down one other benefit of protecting biodiversity. [1]
  7. June 2024, Biology Paper 5 Higher, Q8(b) (4 marks): Explain how chemicals used in farming can affect local biodiversity. [4]
  8. June 2023, Biology Paper 1 Foundation, Q4(a) (6 marks): There are many species of plants and animals on Earth. (a)* Charlie lives next to a forest. Charlie I need to cut down the trees. I need the wood for things lik
  9. June 2022, Biology Paper 1 Foundation, Q5(b) (2 marks): Some companies remove large amounts of soil from peatlands to sell in garden centres. Describe two ways in which this could reduce the biodiversity of the peatl
  10. June 2022, Biology Paper 1 Foundation, Q5(c) (1 mark): The graph shows the amount of soil removed from peatlands in England over 10 years. 1.6 1.4 1.2 1.0 Amount of soil removed 0.8 (millions of m3) 0.6 0.4 0.2 0.0
  11. June 2022, Biology Paper 5 Higher, Q5(b) (2 marks): Another species called common cordgrass has evolved. A survey in Ireland found common cordgrass in 156 of 200 salt marshes. Calculate the percentage of salt mar
  12. June 2022, Biology Paper 5 Higher, Q5(c) (1 mark): In Ireland it is considered an invasive species which reduces biodiversity. Define biodiversity. [1]
  13. June 2022, Biology Paper 5 Higher, Q5(d) (3 marks): Common cordgrass: • reduces the populations of native salt marsh plants • grows over open mudflats where birds feed. Common cordgrass can be removed by: • diggi
  14. November 2021, Combined Science Paper 4 Foundation, Q6(a) (6 marks): The Amazon rainforest is an area of very high biodiversity. Rainforest River The table shows data on four species groups found in the Amazon rainforest. Number
  15. November 2021, Combined Science Paper 4 Foundation, Q6(b) (2 marks): Which two statements are benefits of maintaining biodiversity in the Amazon rainforest? Tick (✓) two boxes. It prevents rainforest species from becoming extinct
  16. November 2021, Biology Paper 5 Higher, Q8(a) (3 marks): Calculate the percentage of the total rainforest area that was lost to fires in 2019. Give your answer to 2 significant figures. Percentage of rainforest area l
  17. November 2021, Biology Paper 5 Higher, Q8(b) (4 marks): Some fires are started in the Amazon rainforest to clear land for agriculture. This affects local and global biodiversity. Suggest an ecological, moral, economi
  18. November 2020, Biology Paper 1 Foundation, Q4(c) (3 marks): Cows are used in conservation grazing to help prevent grassland turning into woodland. This helps maintain biodiversity. Draw lines to connect each cow behaviou
  19. June 2019, Biology Paper 5 Higher, Q2(a)(v) (2 marks): Some students are studying the North Sea food web. They discuss how fishing may affect the biodiversity of the North Sea. Amir Ben Fishing will increase the Fis

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