Gardeners are encouraged to buy peat-free compost.
Which statement gives the best reason for this in terms of both biodiversity and climate?
Peat bog habitats are conserved, and carbon stored in the peat is not released as carbon dioxide
Peat bog habitats are conserved, and peat-free compost absorbs more carbon dioxide from the air
Peat-free compost contains more nutrients, and bogs release less methane once the peat is removed
Peat-free compost contains fewer microorganisms, so less carbon dioxide is released in gardens
40 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.