<Table> <Tr> <Th> NFPA 704 fire diamond </Th> </Tr> <Tr> <Td> 0 0 </Td> </Tr> <Tr> <Td> Fire diamond hazard sign for elemental iodine </Td> </Tr> </Table> <Tr> <Th> NFPA 704 fire diamond </Th> </Tr> <Tr> <Td> 0 0 </Td> </Tr> <Tr> <Td> Fire diamond hazard sign for elemental iodine </Td> </Tr>

Where does naturally source of iodine come from