Some farmers leave field margins and hedgerows around their fields. How does this help to maintain biodiversity?
It provides more minerals for the crop plants growing in the field
It removes more carbon dioxide from the air than the crop does
It provides more habitats for a greater variety of organisms
It reduces the amount of water lost from the soil by the crop
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.