Researchers recorded the mean summer temperature and the lowest altitude at which a species of wildflower was found in the same upland region in three different years.
| Year | Mean summer temperature (°C) | Lowest altitude at which the wildflower was found (m) |
|---|---|---|
| 1990 | 12.1 | 450 |
| 2005 | 12.8 | 520 |
| 2020 | 13.4 | 610 |
Evaluate the evidence that rising temperatures caused a change in the distribution of the wildflower.
83 exam-style questions on AQA GCSE Biology 7.2 Organisation of an ecosystem, covering 7.2.1 Levels of organisation, 7.2.2 How materials are cycled, 7.2.3 Decomposition, and 7.2.4 Impact of environmental change (HT only). Each one has a worked solution and a mark scheme showing where the marks go.