It has to be, to be self supporting in all conditions and weathers
Perhaps a "tree trunk".
Bark covers a tree trunk.
The trunk of a tree is called a 'bole'.
the outer part of a tree trunk
Tree trunk is a compound word
the outer part of a tree trunk
Cellulose makes the trunk of a tree sturdy.
the hard fibrous material that forms the main substance of the trunk or branches of a tree or shrub
the outer part of a tree trunk
Is a wooden tree trunk a compound
Yes. A trunk is not only a stem but it is the main stem of a tree.
rain and winds