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Sugar Maple Tree Lab Report

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Every year starting around June 21st leaves on the trees begin to change color.The days begin to become shorter while the nights become longer. In reaction to the longer nights an abscission layer is formed at the petiole of each leaf, sealing off the flow of nutrients and water to the leaves. The chlorophyll levels in the leaves, then begin to degrade allowing the yellow and orange carotenoid pigments to appear in the chloroplast, changing the color of the leaves. In this experiment a Sugar Maple tree was used used to determine the reason why leaves change color during Autumn. Two samples were taken, one on September 23 and the other on October 19, then they were ran threw the spectrophotometer to examine the chlorophyll levels. Through

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