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dry, hot wind that blows down the slopes of the Rocky mountains in Canada

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a group of manmade compounds, not found in nature, that contain fluorine, chlorine and carbon...

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volcanic cone with steep slopes and successive layers of ash and cinders and broken rock; there...

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a line that divides Earth into the parts that are experiencing daylight and the parts that are...

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a thin uniform layer or sheet of hazy cloud that forms high in the atmosphere

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