If Si is the average salt content of the incoming seawater and So is the average salt content of the exiting surface water in an estuary, the fresh water in the exiting mixed water is ________.

A. So/(Si - So)
B. (Si - So)/So
C. (So - Si)(Si - So)
D. Si/(Si - So)
E. (Si - So)/Si


Answer: E

Environmental & Atmospheric Sciences

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