Question

Why does leaf fall from tree?O_o​

Answer 1

leaf falls firm the tree when they dry up and again regenerate into green leaves. as the leaf falls down because when the leaves arent doing their job anymore that producing food for the tree . To do this leaves need water the tree doesn't waste its water on all the leaves so the leaves which are not getting sufficient water fall down and nutients of the dry leaf are taken back from the stem and roots to produce proteins