<Li> Carbohydrates, which store energy in a form that can be used by living cells </Li> <Li> Lipids, which also store energy, but in a more concentrated form, and which may be stored for extended periods in the bodies of animals </Li> <Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (March 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (March 2015) (Learn how and when to remove this template message) </Td> </Tr>

Carbon forms the backbone of biology of life on earth