Plants are carbon based, they also contain water as well.
The element that makes up wood is born electron and saliumn.
Wood is mainly made up of cellulose (a polysaccharide ("complex glucose") which is a compound of carbon, hydrogen and oxygen).
methynol
carbon, hydrogen, and oxygen. it is called glucose, fructose, saccharose, lactose, ....
It is an element
Shortening, such as Crisco, is made from vegetable oil.