A gardener puts grass cuttings and vegetable peelings into a compost bin.
Name the two types of microorganism that cause the waste to decay.
The gardener turns the compost with a fork every week. Explain why turning the compost increases the rate of decay.
Give one use of the compost that is produced.
40 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.