<Ul> <Li> animal </Li> <Li> crop </Li> </Ul> <Li> Slash - and - burn </Li> <Tr> <Th> In water </Th> </Tr> <Tr> <Td> <Ul> <Li> Aquaculture </Li> <Li> Aquaponics </Li> <Li> Hydroponics </Li> </Ul> </Td> </Tr>

What are the requirements of farming which would lead to high yield of crops