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Unit 3. The atmosphere
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In which layer do auroras (e.g. northern lights) occur?
Thermosphere
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What is the order of earth's atmospheric layers from bottom to top?
Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere.
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Which gas is present in the atmosphere in the greatest amount?
Nitrogen
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This layer filters out most of the harmful radiation of the Sun
Thermosphere
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Which layer of the atmosphere contains the ozone layer?
Stratosphere
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It is between the altitudes of 50 to 80 km
Mesosphere
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Which gas makes up approximately 21% of the atmopshere?
Oxigen
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In which layer do all weather phenomena take place?
Troposphere
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This layer contains most of the atmosphere air
Troposphere
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It is the layer where shooting stars ocurr as meteorites break up
Mesosphere
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