Suggest two strategies for enhancing future food production systems to ensure a larger and more dependable food supply.
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Syllabus Edition
First teaching 2024
First exams 2026
Suggest two strategies for enhancing future food production systems to ensure a larger and more dependable food supply.
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State three ways in which unsustainable agricultural practices may lead to a loss of biodiversity.
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State two main differences between commercial farming and subsistence farming.
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A group of researchers carried out bird surveys on the same farm over a period of twenty years.
Their results are shown in the table below.
Species | 2001 | 2020 |
Grey partridge | 0 | 25 |
Skylark | 35 | 81 |
Greenfinch | 42 | 4 |
Goldfinch | 0 | 24 |
Yellowhammer | 2 | 206 |
One change in farm management that took place between 2001 and 2020 was that farm hedgerow cutting was switched from a yearly cut to a staggered cut every 3 years (each hedgerow cut every 3 years, but not all cut in the same year).
State how this could lead to the increase in bird diversity shown in the table above.
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Suggest what might have caused the decrease in greenfinch numbers between 2001 and 2020, as shown in the table in part (a).
Do not include the effects of humans illegally catching greenfinches to keep as pets.
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Briefly outline the meaning of the term desertification in the context of soil ecosystems.
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Identify two soil conservation measures that can be implemented to prevent desertification.
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Outline one effect of soil conditioning on soils.
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In the context of agriculture and terrestrial food production systems, outline the meaning of the term marginal lands.
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Suggest three reasons for the limited availability of food in some human societies.
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Outline four environmental impacts of the following named food production system:
Cattle farming in Brazil
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Outline four environmental impacts of the following named food production system:
Wheat and corn cultivation in the USA
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Outline two factors contributing to food waste in LEDCs.
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Outline two factors contributing to food waste in MEDCs.
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Explain how deforestation contributes to soil degradation.
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Outline how soil degradation can be caused by human activities other than deforestation.
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Explain how allowing arable farmland to remain fallow (unused) between growing seasons might contribute to soil degradation.
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The figure below shows information about desertification in Northern Africa.
Describe the distribution of the areas in Northern Africa where the risk of desertification is very high.
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Describe the impacts of desertification on local people.
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Landslides are often triggered by intense rainfall following a hurricane.
The photograph below depicts a landslide occurring in Cusco, Peru as a result of substantial rainfall on a steep incline.
Galeria del Ministerio de Defensa del Perú, CC BY 2.0 <https://creativecommons.org/licenses/by/2.0>, via Wikimedia Commons
Outline one method farmers in Peru could employ to mitigate soil erosion on hillsides and why this method would be beneficial.
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Using your knowledge of ecosystems and environmental value systems, evaluate the claim that "a vegetarian diet is better for the environment”.
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Explain why commercial industrialised food production systems generally tend to reduce soil fertility more than small-scale subsistence farming methods.
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Evaluate the soil management strategies used by farming systems for soil conservation.
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Discuss how social, cultural, political and economic factors influence the choice of food production systems in different societies.
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