How is air pressure affected when an area of Earth is heated?

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

Why is the improved education of girls so important, especially with regard to economics and health? what are the leading causes of death among teenage girls in africa and how are they tied to education?

Which statements about wells are true? check all that apply. a) wells bring groundwater from the unsaturated zone to the surface of the water. b) wells need to be drilled below the water table. c) if water is pumped from a well too quicky, the well may run dry. d) water from wells is generally not safe to drink. e) water gushes from artesian wells due to pressure.