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Biology
Ecosystems and Material Cycles
Pollution and Decay
Indicator Species
Indicator Species
Edexcel GCSE Biology (1BI0) — Ecosystems and Material Cycles
What You Need to Know
Evaluate the use of indicator species to assess pollution levels.
Identify bloodworm and sludgeworm as indicators of polluted water.
Identify freshwater shrimps and stonefly as indicators of clean water.
Identify lichen and blackspot fungus as indicators of air quality.
Revision Notes
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Indicator Species
14 key terms
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Nitrogen Cycle
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