Examlex
Summarize the origins and the progress of the bubonic plague of the fourteenth century.Which regions were hit the hardest? Which regions were largely spared?
Hazardous Substances
Materials that can pose a risk to health, safety, and the environment if not properly handled or contained.
CEQ
Council on Environmental Quality, a federal agency that advises the United States president on environmental policy and issues.
Chlorofluorocarbons
Chemical compounds that were widely used as refrigerants and aerosol propellants until they were found to deplete the ozone layer.
Ozone Layer
A layer in the Earth's stratosphere containing a high concentration of ozone, which absorbs most of the sun's ultraviolet radiation, protecting life on Earth.
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