What do organisms cluster around, in the ocean floor?\nOptions:\n- (A) cracks\n- (B) chemicals\n- (C) limestone\n- (D) crust\n- (E) headaches\n- (F) Nutrients\n- (G) horses\n- (H) dogs OK. Let's think hard:
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Organisms cluster around hydrothermal vents in the ocean floor. Background Hot water vents form inside cracks in the ocean floor. Organisms cluster around cracks in the ocean floor.
So, the final answer is (A).
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