Examlex
Compare and contrast primary and secondary data.
Acid Deposition
The deposition of acidic components in rain, snow, or dust on the surface of the Earth, often resulting from industrial emissions.
Nitrogen Oxides
Gaseous compounds of nitrogen and oxygen, such as NO and NO2, that contribute to air pollution and can have harmful effects on human health and the environment.
Endemic Species
A species found only in the region where it evolved.
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