300 dpi: (k10041-1.jpg)
640 pixels wide: (k10041-1.jpg)
 Image Number K10041-1 |
Postdoctoral research associate Mark Weaver examines a soil core from a newly constructed wetland designed to capture agricultural runoff. Microbes in the wetland help to improve water quality by breaking down pesticides and removing nitrates.
Photo by Peggy Greb.
