IB Biology Quiz
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INTERACTION AND INTERDEPENDENCE
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Scientists measure the concentration of a pollutant in four species from a food web: Species A (0.05 ppm), Species B (1.5 ppm), Species C (25.0 ppm), and Species D (1.7 ppm). Given that species C preys on both B and D, and that both B and D prey on A, which species occupies the highest trophic level?
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