Question

what is the key role of hydrothermal vents in the ocean depths? hydrothermal vents supply oxygen and carbon to the water. hydrothermal vents supply sunlight and nitrogen to the water. hydrothermal vents supply heat and nutrients to the water. rewatch

Explanation:

Hydrothermal vents are in ocean depths where sunlight doesn't reach. They release heat (from geothermal sources) and nutrients (like minerals from the Earth's crust). The first option is incorrect as they don't primarily supply oxygen and carbon. The second is wrong because sunlight can't reach deep ocean, so they can't supply sunlight. The third option matches the role of hydrothermal vents in providing heat and nutrients to the deep - ocean environment.

Answer:

Hydrothermal vents supply heat and nutrients to the water.