<Tr> <Td> Space group </Td> <Td> 32 / m </Td> </Tr> <Tr> <Th_colspan="2"> Thermochemistry </Th> </Tr> <Tr> <Td> Std molar entropy (S) </Td> <Td> 93 J mol K </Td> </Tr> <Tr> <Td> Std enthalpy of formation (Δ H) </Td> <Td> − 1207 kJ mol </Td> </Tr>

What other parts of marine organisms need carbon and calcium to form