Examlex
Pick the choice below that is an example of a material or process that does not involve alumina.
Wind
Air in motion relative to the surface of the earth, playing a significant role in weather patterns and climate.
Air Pollution
The presence of harmful or excessive quantities of substances, including gases, particulates, and biological molecules in the atmosphere.
Pollutants
Substances that contaminate air, water, or soil, potentially causing harm to human health, the environment, or both.
Emissions
The release of substances, such as gases, liquids, or particulates, into the air or water, often associated with pollution from industrial activities or vehicles.
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