Final answer:
The speed of the reaction in Blood Falls may be affected by the temperature of the water.
Step-by-step explanation:
The speed of the reaction in Blood Falls, where the lake water changes color rapidly on exposure to air, may be affected by the temperature of the water. In the given information, it is mentioned that as air temperatures drop in the fall, the temperature of the lake water cools. This cooling causes fall turnover, where the heavy cold water sinks and displaces the water at the bottom. The oxygen-rich water at the surface then moves to the bottom while the nutrients at the bottom rise to the surface. It is important to note that temperature affects the physiology of living things as well as the density and state of water. Organisms have specific temperature ranges within which their enzymes are most efficient. Enzyme degradation can occur at higher temperatures. Therefore, a change in temperature can affect the reaction in Blood Falls.