Assuming that all other factors are equal,on a cold winter afternoon the amount of dissolved O₂in a lake will be
A)more than on a hot day because the decreased energy in colder water makes O₂molecules 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 O₂molecules 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 O₂molecules 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 O₂molecules more likely to escape to the atmosphere,and biological oxygen demand will be lower than on a hot day.

Question

Quizplus · Accepted Answer

In colder water, the decreased energy makes O₂ molecules less likely to escape to the atmosphere, which means that the amount of dissolved O₂ in a lake will be more than on a hot day. Additionally, biological oxygen demand will be lower on a cold day as colder water temperatures slow down the rate of oxygen consumption by organisms in the lake.

Assuming That All Other Factors Are Equal,on a Cold Winter