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Chemosynthesizers can convert chemicals into biomass, and many types of chemosynthetic organisms congregate near hydrothermal vents where chemicals are abundant.

Which of the following predicts why there would be higher biomass and greater primary production of organisms living in the hydrothermal vent areas in contrast to the areas outside the vent areas?


The vents release an abundance of chemicals the organisms living there can use in the production of energy molecules.


The heat released from the vents oxidizes chemicals in the water that organisms consume.


It is too cold outside the vent areas, so most of the organisms live within the vent areas.


Predators are rare in the vent areas, so organisms rarely venture out beyond the immediate vent area.

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