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UPSC Prelims 2023Question 59Environment

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?

Options

  1. (a)Only one
  2. (b)Only two
  3. (c)All three
  4. (d)None

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