Which statement describes what is meant by the biodiversity of an ecosystem?
The total number of individual organisms living in the ecosystem
The combined mass of all of the organisms living in the ecosystem
The largest number of organisms the ecosystem is able to support
The variety of different species of organism living in the ecosystem
49 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.