Name two elemental forms of carbon found on the earth?
Graphite, Diamond.
(i)Name two elemental forms in which carbon occurs.
(ii)Name any two forms in which carbon is found in a combined state with other elements in nature.
(iii) Briefly explain how it can be said that all life forms are based on carbon-containing molecules.
name the elemental form of carbon?
tell the names of the layers of oxide,carbonate and sulphide that forms on the surface of some elements and also name those elements