A cereal crop is grown in Selan, a lower-income country. More people in the wealthy country of Orvia began eating foods made from this crop.
The table shows what happened over five years.
| Year 1 | Year 5 | |
|---|---|---|
| Total crop production in Selan (million tonnes) | 3.0 | 3.0 |
| Crop exported to Orvia (million tonnes) | 0.6 | 1.2 |
| Crop available for people in Selan (million tonnes) | 2.4 | 1.8 |
| Population of Selan (millions) | 12 | 15 |
Using the data, explain how the change in diet in Orvia could threaten food security in Selan.
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.