Organisms cluster around hydrothermal vents in the ocean floor, and to survive, some organisms living near hydrothermal vents have formed close associations. Given these facts, how is survival ensured around hydrothermal vents among the following options:
- heat produced
 - Eating a lot
 - Reproducing quickly
 - biological diversity
 - vegetation
 - Being in a cluster
 - Staying far apart
 - hydrate their cells


 

      Being in a cluster   