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03-12-2016
Biology

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how can the fish eating bird have 5 ppm of ddt when the water only started with 0.003ppmm of ddt

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03-12-2016

The birds have more ppm of DDT due to biomagnification. The fish living in the water intake DDT. Birds eat these fish and intake DDT as well. The concentration of DDT in organisms increases as it moves up the food chain.

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