Jpstackz2730 Jpstackz2730

18-01-2024
Biology

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The ecological efficiency in a food chain is 10%. A pollutant (X) is transferred from one trophic level to the next with an efficiency of 30%. The concentration of X on trophic level 2 is 12 ppm. What is the concentration of X on trophic level 1?
A. 4 ppm
B. 12 ppm
C. 40 ppm
D. 120 ppm

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