Question

question 3
what happens to the dissolved minerals when the hot, vent fluid meets the cold ocean water?
they solidify, forming tall chimney - like structures.
they remain dissolved in the water and are carried away by currents
they turn into gas and dissipate into the water column
they are consumed by deep - sea organisms.

Explanation:

When hot, vent fluid (containing dissolved minerals) meets cold ocean water, the temperature change causes the dissolved minerals to solidify. This process forms structures like hydrothermal vents' chimney - like formations. The other options are incorrect: dissolved minerals don't just stay dissolved (temperature change affects solubility), they don't turn to gas (the process is about precipitation/solidification), and deep - sea organisms don't mainly consume them in this context for this process.

Answer:

A. They solidify, forming tall chimney - like structures.