Saturday, November 24, 2012

Many trees a sip away from dehydratiobn

says a report in ScienceNews "In plumbing systems, trees have to make tradeoffs. Capturing carbon dioxide in the air for growth and metabolism is a risky business. A tree sacrifices 400 molecules of water to evaporation to snag one molecule of carbon. The new study, Choat says, reveals that trees are maximizing their carbon capture for food even though it strains the plumbing."

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