A settlement beside a heathland expanded between 2005 and 2025. The standard of living of the residents also increased.
Ecologists surveyed the same area of heathland using the same methods in both years.
| Year | Human population | Waste not handled properly in tonnes per year | Number of species recorded |
|---|---|---|---|
| 2005 | 1600 | 240 | 92 |
| 2025 | 3040 | 690 | 61 |
Calculate the percentage increase in the human population between 2005 and 2025.
Explain how the changes shown could have caused the number of species recorded in the heathland to decrease.
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.