P139
Fresh water is distributed ________ across the world thus the amount of fresh water per capita available can vary ____________. Fresh water available is calcucated by ______________________________________________. Water security, water _______, water stress and water ___________ are terms used to describe different levels of water availability.
There is water security when there is _________ and ________ fresh water for human consumption.
Natural factors such as climate can affect the supply of water. Areas in Northern Africa experience water ________. It receives low and _________ rainfall. Most countries cannot meet the _______ _________. As global warming continues the climate will get ______ &________. This will increase evaporation and reduce ________ water supply.
Besides natural factors water shortage can also be caused by human activities. Uzbekistan is a country in Central Asia which relied heavily on water from the _____ ______. However due to ________ practices for crops such as cotton and rice the water in the sea has reduced drastically. By 2006 the sea had dried by almost ____%. The water that was left is now salt water which isn’t suitable for _______. The Aral Sea is an example of how increasing ______ for crops has led to a decreasing _______ of water.
P142
Demand Factors
Population Growth
The major cause of water shortage is the increasing __________________. As population increase the demand for water also _________. Water consumption for __________ will also increase. The production of ________________ are extremely ________ ____________. Worldwide water demand for water is doubling every 21 years.
Most of the world population increase will occur in _____________ _________ countries mostly in Asia and Africa. Rising population will further increase the ______ on water resources.
Affluence
Being affluent means having _______ and being able to live more ________. People living