Image: Soil fertility - nitrogen fixation by root nodules on Wistaria roots, with hazelnut to show size
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Description: Nitrogen-fixing nodules on Wisteria roots (hazelnut for scale)
Title: Soil fertility - nitrogen fixation by root nodules on Wistaria roots, with hazelnut to show size
Credit: Own work
Author: Rowan Adams
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: http://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes
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