Development of cork cambium layer. Slow down, initially and faster, respectively. Making water and minerals into the leaves less. The chlorophyll in the leaves can also be reduced. Usually the tree we see leaves are light green or dark green or yellow a little bit. The fact leaves do not have green only one color. But flesh colored leaves are yellow and red. But we see green pronounced Jane. Because of the leaves are the pigment, called "chlorophyll", which will be the photosynthesis to bring พลังงานไป create food for plants to grow. So the process of plant food, therefore are leaves in summer and spring. The leaves to produce chlorophyll out to create food. And the summer sun time is long. The leaves will accelerate produce food stored in this season, when entering the autumn sun, start to dwindle as day time shorter. Water is less. The temperature drops when the temperature drops, it will produce less chlorophyll While the existing will gradually decay, so in the autumn leaves start stop food production and pulled out the food that create stored when the summer instead. Private leaves will begin to change color from green to yellow or orange, red, until gradually fall until only the stems and branches of a phenomenon. Fall colors autumn colors and this goes on, the seasonal and every year.
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