 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.
An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.