1) What percentage of the world's supply of water is fresh water?
Answer: 2.5% of waters surface is fresh water.
2) Where is the world's supply of fresh water found?
Answer: 2% is in the form of ice on land, 0.49% is found in groundwater and the soil, and 0.01% is found in the atmosphere, rivers and lakes.
3) Even though the supply of fresh water is abundant it is still a problem. Why?
Answer: It is a problem because water and people are unevenly distributed. Because of this uneven distribution, some places and people have available and consume far more water than others.
4) Observe the map of world average annual precipitation (opposite).
(a) Describe the changes in rainfall that occur as you move from the southern to the northern tip of Africa.
Answer: From the southern tip to the northern tip, the rainfall raises until the Tropic of Cancer.
(b) Describe the changes in rainfall that occur as you move from the western to the eastern tip of Australia along the Tropic of Capricorn.
Answer: From the western tip of Australia to the eastern tip of Australia, the rainfall started out with 250mm and at the tip of Australia, it raised again until 2000mm.
5) Observe the map above of water availability per person.
(a) Which parts of the world appear to have a large amount of water available per person?
Answer: South America seems to have a high water availability per person.
(b) Which parts of the world appear to have a small amount of water per person?
Answer: Europe seems to have a low water availability per person.
6) Observe the diagram of water use.
(a) What are the main uses of water?
Answer: The main uses of water is for agriculturing.
(b) Which uses have increased the most over the last century?
Answer: Reservoir uses from evaporation and seepage has increased the most over the last century.
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