Grain is the main food crop in Country L.
The table shows population, grain production, mean annual rainfall and the cost of fertiliser in 2010 and 2025.
| Year | Population / millions | Grain production / million tonnes | Mean annual rainfall / mm | Cost of fertiliser / £ per tonne |
|---|---|---|---|---|
| 2010 | 18.0 | 5.40 | 820 | 240 |
| 2025 | 24.0 | 6.24 | 610 | 390 |
Calculate the percentage decrease in grain production per person between 2010 and 2025.
Suggest whether Country L will find food security easier or harder to maintain if the changes in grain production per person, rainfall and fertiliser cost continue.
87 exam-style questions on AQA GCSE Biology 7.5 Food production, covering 7.5.1 Factors affecting food security, 7.5.2 Farming techniques, 7.5.3 Sustainable fisheries, and 7.5.4 Role of biotechnology. Each one has a worked solution and a mark scheme showing where the marks go.