Scientists compared environmental data for a country in 2000 and 2025.
| Measurement | 2000 | 2025 |
|---|---|---|
| Fossil fuels burned in the country in million tonnes per year | 80 | 130 |
| Forest area in the country in thousand km² | 210 | 150 |
| Mean atmospheric carbon dioxide concentration in ppm | 370 | 420 |
| Mean global surface temperature in °C | 14.3 | 15.1 |
| Mean number of species recorded at fixed forest survey sites | 162 | 117 |
The country plans to reduce the amount of fossil fuel burned by 50 million tonnes per year and to plant 30 thousand km² of new forest.
Using the data, describe how the changes in fossil fuel use and forest area may have contributed to the environmental changes between 2000 and 2025. Compare the planned fossil fuel use and forest area with the values in 2000 and 2025, and use these comparisons to predict how the plan could affect atmospheric carbon dioxide and biodiversity.
84 exam-style questions on AQA GCSE Biology 7.3 Biodiversity and the effect of human interaction on ecosystems, covering 7.3.1 Biodiversity, 7.3.2 Waste management, 7.3.3 Land use, 7.3.4 Deforestation, 7.3.5 Global warming, and 7.3.6 Maintaining biodiversity. Each one has a worked solution and a mark scheme showing where the marks go.