During warmer parts of the day, fish will be found in deeper waters of a lake. Which statement best explains this phenomena with respect to the solubility of a gas? A. Gases are more soluble at low pressures. B. Gases are more soluble at high pressures. C. Gases are more soluble at low temperatures. D. Gases are more soluble at high temperatures.
C. Gases are more soluble at low temperatures.
Typically, as water temperature increases, the solubility of gases decreases. This means that in warmer waters, there is less dissolved oxygen available for fish to breathe. Therefore, fish may move to deeper waters where the temperature is lower and there is more dissolved oxygen available.