The imaginary lines highlighted on the map travel from north to south and are used to measure distance from the Prime Meridian. They are

Explain why components that are naturally found in air can be considered air pollutants.

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Suggest two reasons why irrigation is important for human development of the desert (4 marks)