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7.3 Biodiversity and the effect of human interaction on ecosystems

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Question 21

A heathland ecosystem covered 640 hectares. Some of the heathland was then used as shown in the table.

Land useArea of heathland used in hectares
Building96
Quarrying64
a.

Calculate the percentage decrease in the area of heathland.

[2]
b.

Explain how these land uses could make the heathland ecosystem less stable.

[3]
Markscheme

7.3 Biodiversity and the effect of human interaction on ecosystems Questions

  1. GCSE
  2. /Biology
  3. /7.3 Biodiversity and the effect of human interaction on ecosystems

84 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.

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