CAUSE
One question. One truth.
“Why do leaves change color in autumn?”
Shorter daylight and cooler temperatures in autumn cause trees to halt chlorophyll production. This triggers the breakdown of the green pigment, revealing underlying carotenoid and anthocyanin pigments.
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This process produces the characteristic autumn leaf colors—yellows, oranges, reds, and purples—by exposing pigments previously masked by chlorophyll. Trees in temperate zones like Delhi experience this seasonal pigment shift.
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