Why do leaves turn color during fall
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Fall is staggering in, with its beautiful leaves.
In the fall, the tree's leaves stop producing the pigment chlorophyll, and photosynthesis ceases. That's where the colors come from.
In Europe, the warm, humid weather turns the leaves brown while anthocyanin turns leaves red.
Fall is the time when leaves fall from the trees, just as spring is when flowers spring up, summer is when we simmer, and winter is when we whine from the cold.
How do the colored leaves fall? As a leaf ages, the growth hormone, auxin, fades, and cells at the base of the petiole divide.
At last the leaves leave. But first, they turn color and thrill us for weeks on end. Then they crunch and crackle under foot.
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