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Vocabulary Entry
troposphere
|noun
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N
noun
The lowest region of the atmosphere, extending from the Earth's surface to about 8 to 15 kilometers upward, where most weather phenomena occur.
Example Sentences
"The clouds in the troposphere are responsible for rain and thunderstorms."
"As we ascend, we leave the troposphere and enter the stratosphere."
"The troposphere contains about 75% of the atmosphere's mass."