I believe it is organic chemistry. We just studied that in science. Don't rely on this answer as I don't have my science book with me and I am trying to pull this out of my head.
it is called microbiology
Most of them are called the group of INorganiccompounds.
it's called a element according to study island
diamondgraphitecharcoal
diamond
AldehydesKetonesCarboxylic acidsAlcohols
Because Diamond is an allotrope of carbon - diamonds are purely made out of carbon.
The answer is organic chemistry
If a substance is made out of one chemical it is called a Element.
basically there is no common substance from which everything is made.. if ur question is changed to " what are most of the things made of.." then its carbon.
Inorganic compunds
Carbon monoxide is a pure substance, as it is made up of molecules that are all identical (one carbon atom and one oxygen atom). It does not contain different types of molecules mixed together.