The primary source of energy for hydrothermal vent communities is
A)the heat of the water emerging from the vents.
B)oxidation of petroleum compounds in the vent water.
C)oxidation of hydrogen sulfide in the vent water.
D)reduction of carbon dioxide in the vent water.

Question

Quizplus · Accepted Answer

Hydrothermal vent communities are primarily powered by the oxidation of hydrogen sulfide released from the vents. This creates a source of energy for chemoautotrophic bacteria, which are the basis of the food chain for organisms living in these environments. Choice A is not correct, as the heat from the water can be extreme and is not used as a direct source of energy by vent communities. Choice B is also not correct, as petroleum compounds are not typically found in the vent water. Choice D is not correct, as carbon dioxide is not a significant source of energy for these communities.

The Primary Source of Energy for Hydrothermal Vent Communities Is