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April 19, 2015

Homework Help: biology

Posted by ramla on Monday, March 29, 2010 at 2:44pm.

in response to shortened day length and cool temperatures, many trees begin a period of senescence when the breakdown of chlorophyll exceeds chlorophyll production. the leaves of these trees change to yellow and orange. using your knowledge of photosynthetic pigments explain the sours of these yellow-orange hues.

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