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Ecosystems, interdependence and field sampling

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Question 5

Give the names of the two indicator species from the box which provide evidence for polluted water containing low levels of dissolved oxygen.

bloodwormlichen
stonefly nymphsludgeworm
mayfly nymph
[2]

Ecosystems, interdependence and field sampling Questions

  1. GCSE
  2. /Biology
  3. /Ecosystems, interdependence and field sampling