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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.
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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.
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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.
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what does raw sewage do to a river?
it will increase the bacterial population and uses up the oxygen.
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what do rat tailed maggots and sludgeworms indicate?
high levels of water population.
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Other cards in this set

Card 2

Front

how can air pollution be monitored?

Back

looking at particular types of lichen- that are very sensitive to the amount of sulfur dioxide in the atmoshpere.

Card 3

Front

what does mayfly larvae indicate in a river?

Back

Preview of the front of card 3

Card 4

Front

what does raw sewage do to a river?

Back

Preview of the front of card 4

Card 5

Front

what do rat tailed maggots and sludgeworms indicate?

Back

Preview of the front of card 5

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