What is boundary between two air
masses where the masses are
not moving

Data courtesy of the un development programme 2006-2008 and world bank 2009 the chart above compares measures of development using the hdi and gdp. why might turkey rank lower in the hdi indicator even though it has a high gdp?

Which of the following areas has the highest population density?

Suggest 3 different reasons why there is an ageing population in the uk .