posted by jenni on .
Why is nitrogen fixation necessary? How is it accomplished in nature? How can soil nitrogen be supplemented for agriculture?
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5. (Part II of #4) http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/N/NitrogenFixation.html
Carnivorous plants (Venus fly traps and pitcher plants) evolved in response to nitrogen poor soil quality.