Fish apparently are high in Mercury is this because of human population or is this is natural?
In: 6
Both. Mercury is a naturally occurring element, so it’s found in the environment just about everywhere in small amounts, but humans add a lot of extra mercury from pollution. It gets concentrated the higher up in the food chain as the smallest fish eat plankton and other small organisms that have absorbed mercury, and medium sized fish eat those fish, and larger fish eat those medium sized fish, and so on. So mercury tends to be concentrated the most in larger fish or fish that have lived a long time, because they’ve eaten more smaller fish and thus have ingested more mercury.
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