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Question

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?
(a) Only one
(b) Only two
(c) All three
(d) None

Answer:

C

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Explanation:

Statement 1 is correct. Gold mining, particularly artisanal and small-scale gold mining (ASGM), is a significant source of mercury pollution globally. The process of extracting gold using mercury leads to the release of mercury into the environment.

Statement 2 is correct. Coal-based thermal power plants are one of the major sources of mercury emissions. Burning coal releases mercury into the atmosphere, which can then deposit into water bodies and ecosystems.

Statement 3 is correct. There is no known safe level of exposure to mercury. Mercury is a toxic substance that can accumulate in the environment and living organisms, including humans. Even low levels of exposure to mercury can have adverse health effects.

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