If the seawater available to an estuary has a salinity of 30 percent and the seaward-flowing mixed water has a salinity of 20 percent at the estuary entrance, the net volume transport seaward is ________ units per day if the river input is 10 units per day.
A. 10
B. 5
C. 50
D. 20
E. 30
Answer: E
Environmental & Atmospheric Sciences
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