<Tr> <Th> Longest river </Th> <Td> Murray River, 2,375 km (1,476 mi) </Td> </Tr> <Tr> <Th> Largest lake </Th> <Td> Lake Eyre 9,500 km (3,668 sq mi) </Td> </Tr> <Tr> <Th> Climate </Th> <Td> Mostly desert or semi-arid, south - east and south - west corners: temperate, north: tropical climate, varied between tropical rainforests, grasslands, part desert . </Td> </Tr> <Tr> <Th> Terrain </Th> <Td> mostly low plateau with deserts, rangelands and a fertile plain in the southeast </Td> </Tr>

Which characteristic of a geographic region would have the greatest