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| layer of gases surrounding Earth that protects living things against harmful doses of ultra-violet radiation and X-ray radiation and absorbs and distributes warmth. |
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| In the atmosphere, solids such as dust, salt and pollen, and liquid droplets such as acids. |
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| Layer of the atmosphere that is closest to the surface of the Earth and contains most of the Earth's weather. |
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| Current conditions of the atmosphere including cloud cover, tempurature, wind speed and direction, humidity, and air pressure. |
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| Temperature at which air is saturated and condensation can occur |
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| Amount of water vapor in the atmosphere |
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| Measure of the water vapor in the air compared with the amount that could be held at specific temperatures |
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Occurs when drops of water or crystals of ice become too large to be suspended in a cloud and fall in the form of rain, snow, sleet or hail |
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| A large body of air that developes over a particular region of Earth's surface |
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| Boundary that developes where air masses of different temperatures collide |
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| Violent, whirling wind that travels in a narrow path over land and can be highly destructive |
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A large storm that begins as a low-pressure area over tropical oceans, has sustained winds that can reach 250 km/h. |
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| Everything moves from high pressure to... |
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| Kind of pressure that cold air has |
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| Kind of pressure that warm air has |
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Layer of the atmosphere that is closest to the surface of the Earth and contains most of it's weather. |
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| Layer of the atmosphere that contains the ozone layer |
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