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1.What is the % concentration of oil in the first, second, and third trophic levels in our food chain?

2.How did the concentration of oil change from one trophic level to the next?

3.How does the change in concentration represent biomagnification?

4.How does this also illustrate the amount of energy transferred from one trophic level to the next?

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    How does the change in concentration represent biomagnification?

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