WAEC - Biology (1994 - No. 21)
Which of the following represents the correct order in a possible food chain?
Crustacean -> diatom -> fish -> man
Fish -> crustacean -> man -> diatom
Man -> fish -> crustacean -> diatom
Diatom -> crustacean -> fish -> man
Man -> diatom -> fish -> crustacean
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