How is survival ensured around hydrothermal vents?\nOptions:\n- (A) heat produced\n- (B) Eating a lot\n- (C) Reproducing quickly\n- (D) biological diversity\n- (E) vegetation\n- (F) Being in a cluster\n- (G) Staying far apart\n- (H) hydrate their cells Let's solve this problem gradually.

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Organisms cluster around hydrothermal vents in the ocean floor. To survive, some organisms living near hydrothermal vents have formed close associations. Clusters form around hydrothermal vents to ensure survival. So the final answer is (F).
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