Many trees have leaves that are green in the summer and red yellow or orange in autumn. Where were these colors during the summer? How can they sudenly appear in autumn?
2007-02-11 11:53:45 · 6 answers · asked by Fauziah J 2 in Environment
The green color arises from the chlorophyll, which absorbs red and blue light. In the fall, as the leaf shuts down, the chlorophyll degrades.
2007-02-11 11:59:47 · answer #1 · answered by Anonymous · 1⤊ 0⤋
As fall approaches temperatures drop and the natural enzymes in the leaves start to react with the green leaf and causes off colors such as red, yellow , etc. Eventually the leaf dies.
2007-02-11 12:16:00 · answer #2 · answered by Brick 5 · 0⤊ 0⤋
They are there all along, but masked by the stronger color of green chlorophyll. They appear suddenly because the green chlorophyll is absorbed or decomposes (I'm not certain which..sorry) as the tree begins to "wind down" for the winter.
2007-02-11 11:59:15 · answer #3 · answered by David A 5 · 1⤊ 0⤋
Nature
2016-05-23 23:02:31 · answer #4 · answered by Amy 3 · 0⤊ 0⤋
bec.trees also adjusting the climate
2007-02-11 11:58:07 · answer #5 · answered by brian a 1 · 0⤊ 0⤋
http://www.wwf.org.uk/core/index.asp
http://www7.nationalgeographic.com/ngm/0702/index.html
2007-02-14 21:25:52 · answer #6 · answered by Anonymous · 0⤊ 0⤋