Environmental changes can alter the places in which members of a species are found.
In spring, a plant species grows across most of a woodland floor. By late summer, it is found only beside streams. In autumn, it begins to grow across the woodland floor again. Explain the change in the area occupied by the plant over the year.
Air pollution in the centre of a town increases over several years. A lichen species is sensitive to air pollution. Suggest how the sites occupied by the lichen might change during this time.
83 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.