Examlex
When he reached ________,Columbus sent delegates to seek the court of the emperor of China.
Lower Atmosphere
The part of the Earth's atmosphere closest to the surface, extending from the surface up to the tropopause, and is where most weather events occur.
Montreal Protocol
A global agreement aimed at safeguarding the ozone layer through the gradual elimination of several compounds that contribute to its depletion.
Ozone Destroyers
Chemicals, such as chlorofluorocarbons (CFCs), that break down ozone in the atmosphere.
UV Radiation
Ultraviolet radiation, a form of energy emitted by the sun and artificial sources, known for its ability to damage DNA and cause sunburn.
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