Answers

2016-02-26T19:05:58+05:30
Biomagnification, also known as bioamplification or biological magnification, occurs when the concentration of a substance, such as DDT or mercury, in an organism exceeds the background concentration of the substance in its diet.
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2016-02-26T19:07:11+05:30
The process where certain substances such as pesticides move up the food chain and work their way into rivers and lakes and are eaten by aquatic animals which in turn are eaten by large birds,animals and humans

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