All of the following occur in a countercurrent exchange EXCEPT

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In a countercurrent exchange system, the fluids flow in opposite directions to maintain a concentration gradient over the length of the exchange surface, which typically has a large surface area to facilitate the exchange. The purpose of this design is to maximize the efficiency of the exchange, allowing for more time for the exchange to occur, not less. Therefore, a short contact time for exchange is not characteristic of countercurrent exchange systems.

All of the Following Occur in a Countercurrent Exchange EXCEPT