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Measuring change B1

What is an indicator species? Organisms whose reactions to changes in environments can be studied to see human effect on the environment.
What are lichen sensitive to? The amount of sulfur dioxide in the atmosphere.
What does it mean if there are a lot of lichen in an environment? Low levels of air pollution.
What can be an indicator to water pollution? Mayfly larvae.
Why are mayfly larvae good water pollution indicators? They're sensitive to the concentration of dissolved oxygen in the water.
What would a high amount of mayfly larvae in a river indicate? The water is very clean.
Which invertebrates would you expect to see in polluted water conditions? (2) • Rat-tailed maggots • Sludgeworms
How do scientists use satellites to measure environmental change? Measure temperature of the sea surface and snow and ice cover.
How do scientists use automatic weather stations to measure environmental change? Tell us the atmospheric temperature of a certain position very accurately.
How do scientists use rain gauges to measure environmental change? Measure rainfall to see any yearly changes in amount of rain.
How do scientists use dissolved oxygen meters to measure environmental change? Measure the concentration of dissolved oxygen in water to see if pollution levels are changing.
Created by: GuyBrazier



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