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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number K7662-1

To determining how elevated CO2 may reduce water use by crops, plant physiologist James Bunce measures water vapor conductance of barley leaves grown at twice the current atmospheric CO2 concentration.

Photo by Scott Bauer.

640 pixels wide: (k7662-1.jpg)

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Last Modified: 5/23/2006
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