The tree never decides what will happen to it...it is all a natural process and it is the nature which decides all this or god wanted it that way!
LEAVES
Birds do gather twigs, leaves, and straw to create their shelters, nests.
leaves and twigs
Grouse eat buds, leaves, and twigs. The hatchlings eat insects and other invertebrate.
leaves :]
The bacteria breaks down the leafs and twigs into soil by a chemical solvent that it leaves on the Leaf to break it down. The name I do not know.
they make it out of leaves and twigs
leaves, twigs, and hair.
They use leaves and twigs
Zebras like to eat grass, shrubs, twigs, bark and leaves.
grass, ferns, leaves, twigs, forbs, and shrubs
this just sounds a bit stupid but did a small trench, put twigs over it, put leaves on the twigs, and put a hamster wheel on the leaves.