By Alister Doyle OSLO (Reuters) - Trees can adapt to rising temperatures and limit their natural emissions of greenhouse gases, according to a study published on Wednesday that suggests plants may have a smaller than expected role in stoking man-made global warming. As temperatures rise, trees use more energy in respiration and emit more carbon dioxide from their leaves. "Plant respiration results in an annual flux of carbon dioxide to the atmosphere that is six times as large as that due to the emissions from fossil fuel burning, so changes in either will impact future climate," scientists wrote in the journal Nature.
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