plumiScientific debate, reforestation and biofuels: Edexcel International A Level Biology questions
Every Edexcel International A Level Biology exam question on Scientific debate, reforestation and biofuels (specification points 5.25–5.26), 2019–2025, with its mark scheme and examiner’s report.
Paper
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Exam
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Calculations
Q3(a)
The whole paper ↗Q3(c)(i)
The whole paper ↗Q3(c)(ii)
The whole paper ↗Q5(a)
The whole paper ↗Q5(c)
The whole paper ↗Q9(a)(i)
The whole paper ↗Q9(a)(ii)
The whole paper ↗Q9(a)(iii)
The whole paper ↗Q9(b)(i)
The whole paper ↗Q9(b)(ii)
The whole paper ↗Q9(c)
The whole paper ↗Q8(a)
The whole paper ↗Q8(b)
The whole paper ↗Q8(c)
The whole paper ↗Q8(d)
The whole paper ↗Q4(a)
The whole paper ↗Q5(b)
The whole paper ↗Q8(c)
The whole paper ↗Q7(a)(ii)
The whole paper ↗Q7(b)(ii)
The whole paper ↗
All 22 questions on Scientific debate, reforestation and biofuels, as a list
- June 2024, Unit 4, Q3(a) (1 mark): It is estimated that by 2030, there will be 134 million tonnes of textile waste produced each year. Calculate this increase in textile waste. Give your answer i
- June 2024, Unit 4, Q3(c)(i) (1 mark): Give the meaning of the term sustainable, as used in this context. (1)
- June 2024, Unit 4, Q3(c)(ii) (6 marks): Discuss the extent to which these companies are reducing the conflict between human needs, climate change and conservation. Use the information in the question,
- October 2023, Unit 4, Q5(a) (1 mark): In 2017, the global harvest of seaweed was 32.9 million tonnes. Of this, 96.6 % was cultivated. Calculate the mass of cultivated seaweed. Give your answer in st
- October 2023, Unit 4, Q5(c) (6 marks): In Europe, cultivation of seaweed takes place on a small scale. Large-scale cultivation of seaweed is now being considered. Effective management of the conflict
- October 2023, Unit 4, Q9(a)(i) (2 marks): Calculate the mean rate of global plastic production from 2000 to 2015. Give your answer to 3 significant figures. (2) Answer million tonnes per year
- October 2023, Unit 4, Q9(a)(ii) (1 mark): Estimate the global plastic production in 2023. Use your calculated value from part (i). (1) Answer million tonnes
- October 2023, Unit 4, Q9(a)(iii) (1 mark): Suggest why this value may be an underestimate. Use the information in the graph to support your answer. (1)
- October 2023, Unit 4, Q9(b)(i) (2 marks): Describe how the probability of death due to plastic increases with the number of pieces of plastic in the gut. (2)
- October 2023, Unit 4, Q9(b)(ii) (2 marks): Describe two limitations of using this graph to determine the probability of death due to the ingestion of plastic. (2)
- October 2023, Unit 4, Q9(c) (6 marks): Mangoes are tropical fruits that are harvested before they are ripe. Plastic packaging is used to wrap mangoes after they have been picked. This preserves the f
- June 2023, Unit 4, Q8(a) (2 marks): Explain the importance of protecting existing forests first (rule 1). (2)
- June 2023, Unit 4, Q8(b) (2 marks): Suggest why it is important that organisations involved in reforestation work with the local people (rule 2). (2)
- June 2023, Unit 4, Q8(c) (4 marks): Explain two reasons why previously forested areas should be selected for reforestation instead of other wild areas (rule 3). (4)
- June 2023, Unit 4, Q8(d) (4 marks): Explain why a mixture of native species, including endangered and genetically diverse species, should be introduced (rule 4). (4)
- January 2023, Unit 4, Q4(a) (1 mark): The graph shows the mass of rubber produced in Thailand in 2019 and 2020. Mass of rubber produced / tonnes 2019 2020 In 2020, Thailand produced 4.37 million ton
- January 2023, Unit 4, Q5(b) (6 marks): It has been estimated that because humans have planted more trees and crops, the leaf area increased by 0.5 million km2 between 2019 and 2000. China accounts fo
- October 2022, Unit 4, Q8(c) (4 marks): Reforestation is one way to repair the damage caused to forests by climate change. Explain why the changes to the environment caused by climate change need to b
- January 2022, Unit 4, Q7(a)(ii) (1 mark): State the meaning of the term sustainable, as it has been used in this context. (1)
- January 2022, Unit 4, Q7(b)(ii) (3 marks): Land occupies 149 million km2 of the surface of the Earth. Habitable land is 71% of this area and some of it is used for food production. Calculate the area of
- January 2022, Unit 4, Q7(c) (6 marks): The diagram shows the area of land used to produce one kilogram of some food products. Lamb and mutton 370 Beef 326 Chicken 12 Farmed fish 8 Eggs 6 Wheat and ry
- January 2022, Unit 6, Q1(c) (1 mark): Give one reason why the use of biofuels can reduce the effects of climate change. (1)
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