2011年5月IB地理真题（SL+HL）下载-Paper2
Optional Theme A — Freshwater – issues and conflicts
1. If you choose to answer this question refer to the diagram on page 3 in the Resources Booklet.
The diagram shows the main features of the hydrological cycle.
(a) Describe two conditions at point A which would make infiltration rates higher than at point B.
(b) Explain the consequences of a decrease in the amount of water stored in ice in the hydrological cycle at any stage.
(c) “Strategies adopted to meet the competing demands for water are not always effective.” Discuss this statement with reference to one named river basin.
2. (a) Draw a labelled diagram to show the main features of an artesian basin.
(b) Explain the environmental impacts caused by groundwater abstraction.
(c) Evaluate the success of the management strategies used in one named wetland area.
Optional Theme B — Oceans and their coastal margins
3. The graph shows the percentage of coral reefs that have been lost since 1960.
(a) (i) Describe the pattern of loss of coral reefs.
(ii) State two physical factors which are needed for the development of coral reefs.
(b) Explain three benefi ts that coral reefs bring to people.
(c) Examine the confl icts which arise from competing land uses in coastal margins.
2011年5月IB地理真题余下省略！
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