Question

what are the reasons behind the leaffall​

Answer 1

Answer:

The short answer is that leaves fall off trees when they aren't doing their job any more. A leaf's job is to turn sunlight into food for the tree. To do this, the leaf needs water.

Answer 2

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Leaves fall off trees when they aren't doing their job any more. A leaf's job is to turn sunlight into food for the tree. To do this, the leaf needs water.

Explanation:

hope it helps you!