Use reasoning to answer the following question. _ lack respiratory and excretory systems.\nOptions:\n- (A) graptolites\n- (B) insects\n- (C) ferns\n- (D) barnacles\n- (E) fossil fuels\n- (F) Allergies\n- (G) starfish\n- (H) parasites
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Echinoderms lack respiratory and excretory systems. Echinoderms are represented by the starfish. Starfish lack respiratory and excretory systems.
So, the answer is (G).
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