Demand for and supply of water, issues of water quality

Question 1

Demand

Answer 1

Set to rise due to crops such as sugar cane and cotton

production of dairy and meat products also require a lot of water

aquifiers are being pumped at a rate exceeding the rate of recharge

Question 2

Supply

Answer 2

physical water scarcity - over 1.2 bn people live in a place like this

Question 3

where can water be derived from

Answer 3

natural river flows e.g. Nile

Large dam schemes - but expensive

pumped aquifiers

desalinisation plants - but uses too much energy

domestic scale trapping - sustainable e.g. farmers in Niger building embankments