Answer:
There is life around hydrothermal vents on the ocean floor because the vents provide a source of energy and nutrients that support a diverse community of organisms. Hydrothermal vents are underwater geysers that spew hot, mineral-rich water into the surrounding ocean. The vents are typically found along the mid-ocean ridges, where tectonic plates are spreading apart and magma is rising to the surface.
One reason why there is life around hydrothermal vents is that the hot, mineral-rich water that flows from the vents provides a source of energy and nutrients for the organisms that live there. The water from the vents contains dissolved chemicals and minerals, such as sulfur, hydrogen, and methane, which can be used by certain bacteria and other organisms as a source of food.
Another reason why there is life around hydrothermal vents is that the vents provide a habitat that is protected from larger predators and other threats. The vents are typically located in deep ocean waters, far from the light of the sun and the reach of most larger animals. This provides a safe and stable environment for the organisms that live around the vents.
A third reason why there is life around hydrothermal vents is that the vents can provide a source of oxygen for photosynthetic organisms. Some of the bacteria and other organisms that live around hydrothermal vents are chemosynthetic, meaning that they use the chemicals and minerals from the vents as a source of energy. These chemosynthetic organisms can produce oxygen as a byproduct of their metabolism, which can be used by photosynthetic organisms that live nearby.
In summary, there is life around hydrothermal vents on the ocean floor because the vents provide a source of energy and nutrients, a protected habitat, and a source of oxygen for photosynthetic organisms. These factors support a diverse community of organisms that live in the vicinity of the vents.