Carbon is the only element that can form so many different compounds because each carbon atom can form four chemical bonds to other atoms, and because the carbon atom is just the right, small size to fit in comfortably as parts of very large molecules. ... They can even join "head-to-tail" to make rings of carbon atoms.
Bacteria and fungi carry out decompostion of plants and animals
It’s the first choice because the C at the end does not pair with anything, it was an extra pair that was made
