TROPOSPHERE
Troposphere
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapour and aerosols.The above text is a snippet from Wikipedia: Troposphere
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troposphere
Noun
- The lower levels of the atmosphere extending from the earth's surface up to the tropopause. It is characterized by convective air movements and a large vertical temperature change.
The above text is a snippet from Wiktionary: troposphere
and as such is available under the Creative Commons Attribution/Share-Alike License.