UPSC Civil Services 2023 Prelims General Studies Paper I

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Question : 59 of 100
 
Marks: +1, -0
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?
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