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Why do leaves fall down from the tree when they turn ito yellow

Answer»

Yellow COLORS that were always present inleaves BECOME unmasked as the chlorophyll is broken down and absorbed. Called carotenoids, these are the yellow pigments that give trees LIKE birch, BEECH and tulip their BRIGHT fall colors. ... (Carotenoids play a similar role in the human body, as it turnsout.Oct 15, 2012



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