Question

Aquatic species are more comfortable in cold water because __________
i). as the temperature decreases, the solubility of dissolved oxygen increases.
ii) as the temperature increases, the solubility of dissolved oxygen increases.
iii) as the temperature increases, the solubility of dissolved oxygen decreases.

Answer 1

Aquatic species are more comfortable in cold water rather than hot water because of a very distinct reason forthe decrease in oxygen as the temperature of water increases.

The reason behind such phenomena is that warmer water surface requires less dissolved oxygen to reach a hundred percent air saturation than that required in cooler and deeper water bodies.

The actual amount of dissolved oxygen in any water body depends on the temperature, pressure and salinity.