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parneetgill parneetgill
wrote...
Posts: 468
4 years ago
Which of the figures shown represents countercurrent exchange? The arrows indicate direction of flow, and the numbers indicate concentration of a gas.



▸ figure A

▸ figure B

▸ figure C

▸ figure D
Textbook 
Campbell Biology: Concepts and Connections

Campbell Biology: Concepts and Connections


Edition: 8th
Authors:
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Strategyboyz21Strategyboyz21
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Posts: 370
4 years ago
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parneetgill Author
wrote...

4 years ago
Smart ... Thanks!
wrote...

Yesterday
Good timing, thanks!
wrote...

2 hours ago
Helped a lot
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