Fatty acids contain long chains of hydrogen and this element.
Fatty acids contain long chains of hydrogen and this element. Methane consists of four hydrogens bonded to this element. One form of this element in a cylindrical structure is the strongest known material, and is known as a namesake nanotube. Organic chemistry is the study of molecules containing this element. Its allotropes include diamond and graphite. For 10 points, name this element that makes up all living things.
Fatty acids contain long chains of hydrogen and this element.
carbon [or C; accept carbon nanotubes before "nanotube"]