<P> The geology of Europe is hugely varied and complex, and gives rise to the wide variety of landscapes found across the continent, from the Scottish Highlands to the rolling plains of Hungary . </P> <Table> <Tr> <Td> </Td> <Td> This section needs expansion . You can help by adding to it . (March 2011) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section needs expansion . You can help by adding to it . (March 2011) </Td> </Tr> <P> Figures for the population of Europe vary according to which definition of European boundaries is used . The population within the standard physical geographical boundaries was 701 million in 2005 according to the United Nations . In 2000 the population was 857 million, using a definition which includes the whole of the transcontinental countries of Russia and Turkey . Population growth is comparatively slow, and median age comparatively high in relation to the world's other continents . </P>

Which of the following mountain ranges marks the line between europe and asia