Question

select the correct answer.
why are hydrothermal vents capable of nurturing deep - sea life?
a. they warm the water, creating a favorable temperature range for deep - sea life.
b. they provide migratory routes for underground bacteria to emerge on the sea floor.
c. they provide nutrients from earths surface, which the deep - sea creatures can feed on
d. they provide the right conditions for the formation of chemicals, which bacteria can use as a source of energy.
e. they provide migratory routes for vent creatures to emerge onto the sea floor, which deep - sea life can feed on

Explanation:

Hydrothermal vents release hot, mineral - rich water. These conditions allow for chemical synthesis (e.g., through chemosynthesis). Bacteria use these chemicals (like hydrogen sulfide) as an energy source. Other organisms in the deep - sea food web then rely on these bacteria. Option A is incorrect as the main role is not just temperature. Option B is wrong as it's not about bacterial migration routes. Option C is incorrect as the nutrients come from the Earth's interior, not the surface. Option E is wrong as it's not about vent creatures' migration routes for food.

Answer:

D. They provide the right conditions for the formation of chemicals, which bacteria can use as a source of energy