Why do fish near coal plants have low levels of mercury?



  1. 0 Votes

    Scientists believe it is due to an inverse relationship with selenium. Fish living close to coal plants have 3x more selenium in their system than fish living farther away from the plant. On the other hand, fish living farther away have 3x the amount of mercury in their system. They do not know the details of the relationship between selenium and mercury but they do know that having selenium in the fishs’ system prevents the mercury from building up.

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