science 3.0 / 5 based on 1 rating ? ScienceEnvironmental changeGCSEAQA Created by: Millie2000Created on: 11-06-15 20:54 what are indicator scpecies? organisms that are very sensitive to changes in their enviroment so they can be studied to see the effect of human activities. 1 of 5 how can air pollution be monitored? looking at particular types of lichen- that are very sensitive to the amount of sulfur dioxide in the atmoshpere. 2 of 5 what does mayfly larvae indicate in a river? it indicates that the river is clean, because they are sensitive to the amounts of dissolved oxygen in waters. 3 of 5 what does raw sewage do to a river? it will increase the bacterial population and uses up the oxygen. 4 of 5 what do rat tailed maggots and sludgeworms indicate? high levels of water population. 5 of 5
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