- Artisanal and small-scale gold mining (ASGM) is a major global source of anthropogenic mercury emissions due to the use of mercury to extract gold. - Combustion of coal in power plants releases mercury that is naturally present in coal. - According to the World Health Organization (WHO), there is no known safe level of exposure to elemental (metallic) mercury, as it is toxic even at very low concentrations.
Consider the following statements regarding mercury pollution : 1. Gold mining activity is a source of mercury pollution in the world. 2. Coal-based thermal power plants cause mercury pollution. 3. There is no known safe level of exposure to mercury. How many of the above statements are correct?
Asked in UPSC IAS 2023 · Topic: Pollution (Persistent Organic Pollutants (POPs) and Heavy Metal Pollution: Characteristics, sources, biomagnification, effects, relevant conventions.)
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