A critical point in a river occurs where:
A. The withdrawal rate of dissolved oxygen is faster than the reaeration rate
B. The withdrawal rate of dissolved oxygen is slower than the reaeration rate
C. The withdrawal and reaeration rates are equal
D. The dissolved oxygen reaches a minimum at a particular location and time
Answer:D
A critical point in a river occurs where:
A. The withdrawal rate of dissolved oxygen is faster than the reaeration rate B. The withdrawal rate of dissolved oxygen is slower than the reaeration rate C. The withdrawal and reaeration rates are equal D. The dissolved oxygen reaches a minimum at a particular location and time