<Table> <Tr> <Td> </Td> </Tr> <Tr> <Th> Occupational hazards </Th> </Tr> <Tr> <Td> <Ul> <Li> Physical </Li> <Li> Chemical </Li> <Li> Biological </Li> <Li> Psychosocial </Li> </Ul> </Td> </Tr> <Tr> <Th> Hierarchy of hazard controls </Th> </Tr> <Tr> <Td> <Ul> <Li> Elimination </Li> <Li> Substitution </Li> <Li> Engineering controls </Li> <Li> Administrative controls </Li> <Li> Personal protective equipment </Li> </Ul> </Td> </Tr> <Tr> <Th> Occupational hygiene </Th> </Tr> <Tr> <Td> <Ul> <Li> Occupational exposure limit </Li> <Li> Exposure assessment </Li> <Li> Workplace health surveillance </Li> <Li> Occupational epidemiology </Li> <Li> Prevention through design </Li> </Ul> </Td> </Tr> <Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th> Occupational hazards </Th> </Tr> <Tr> <Td> <Ul> <Li> Physical </Li> <Li> Chemical </Li> <Li> Biological </Li> <Li> Psychosocial </Li> </Ul> </Td> </Tr> <Ul> <Li> Physical </Li> <Li> Chemical </Li> <Li> Biological </Li> <Li> Psychosocial </Li> </Ul>

State the six levels of the hierarchy of control