Question

what things do u think changes the colour of leaves?

Answer 1

chlorophyll gives the leaves green colour but when the chlorophyll broke down the green colour of the leaves disappears and it becomes yellow in colour.

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Answer 2

The chlorophyll breaks down, the green colour disappears, and the yellow to Orange colours become visible and give the leaves part of their fall splendour. At the same time other chemical changes may occur, which form additional colours through the development of red anthocyanin pigments.