An ecologist used the same survey method on two green roofs of equal area.
| Green roof | Number of different species recorded |
|---|---|
| P | 18 |
| Q | 13 |
Which statement is the best comparison of biodiversity on the two green roofs?
Green roof Q has higher biodiversity because each of its species has more space.
Green roof P has higher biodiversity only if all of its extra species are animals.
Green roof P has higher biodiversity because it has a greater variety of species.
The green roofs have the same biodiversity because they have the same area.
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.