What are the simplest components of wood rocks and living organisms?

The simplest components of wood are cellulose, hemicellulose, and lignin, which are organic polymers that provide structure and strength. Rocks are primarily composed of minerals, which are naturally occurring inorganic substances made up of chemical elements. Living organisms are made up of cells, which contain biomolecules such as proteins, lipids, carbohydrates, and nucleic acids that facilitate life processes. Together, these components form the fundamental building blocks of their respective categories.