Assuming That All Other Factors Are Equal, on a Cold

Multiple Choice

Assuming that all other factors are equal, on a cold winter afternoon the amount of dissolved O₂ in a lake will be

A) more than on a hot day because the decreased energy in colder water makes O₂ molecules less likely to escape to the atmosphere, and biological oxygen demand will be higher than on a hot day.
B) less than on a hot day because the decreased energy in colder water makes O₂ molecules more likely to escape to the atmosphere, and biological oxygen demand will be higher than on a hot day.
C) more than on a hot day because the decreased energy in colder water makes O₂ molecules less likely to escape to the atmosphere, and biological oxygen demand will be lower than on a hot day.
D) less than on a hot day because the decreased energy in colder water makes O₂ molecules more likely to escape to the atmosphere, and biological oxygen demand will be lower than on a hot day.