= Life in the Hothouse =
Melanie Lenart, 2010, University of Arizona Press.
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(weathering - chemical erosion of bedrock)

 .p155: Robert Berner: "... Trees do the best job of weathering because they have extensive root systems."  Modern weathering under trees in Iceland is 3-4x faster than neighboring ground without trees.
 .p155: Trees produce the most organic, humic, and fulvic acids.