Which Statement Accurately Describes the Sensitivity of a Lake to Various

Multiple Choice

Which statement accurately describes the sensitivity of a lake to various factors? 

A)  Lakes less vulnerable to pollution than streams because of flushing and larger volumes of water. 
B)  As lake water temperature decreases, oxygen levels decrease. 
C)  Lakes are more vulnerable than streams to contamination by plant nutrients, oil, pesticides, and toxic substances that can destroy bottom life. 
D)  Stratification increases levels of dissolved oxygen in lakes, especially in the bottom layer.