CAPE Environmental Science Unit 2 · 2007 · Paper 2

32 questions and parts from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.

1. 1(a)4 marksOutline four features of mariculture.
2. 1(b)16 marksEvaluate the statement that mariculture has tremendous potential to contribute to Caribbean economies, including two advantages and two disadvantages in your response.
3. 2(a)(i)2 marksState two types of sustainable agricultural practices.
4. 2(a)(ii)6 marksDescribe both of the sustainable agricultural practices stated in 2(a)(i).
5. 2(a)(iii)4 marksState two advantages of each sustainable agricultural practice stated in 2(a)(i).
6. 2(b)4 marksExplain why commercial agricultural systems require high inputs of inorganic fertilizers to maintain yields.
7. 2(c)4 marksOutline one environmental impact resulting from using large quantities of inorganic fertilizers in commercial agricultural systems.
8. 3(a)6 marksDescribe the trends illustrated by each line graph in Figure 1, providing at least three points for each line graph.
9. 3(b)6 marksDescribe two alternative methods that farmers in Bangladesh could adopt to control pests.
10. 3(c)8 marksOutline one advantage and one disadvantage of using each of the alternative pest control methods described in 3(b).
11. 4(a)2 marksDistinguish between a renewable energy source and a non-renewable energy source.
12. 4(b)8 marksWith reference to Figure 2, describe the basic principle of how energy is harnessed in each plant.
13. 4(c)10 marksAssess the feasibility of either system in Figure 2 to satisfy national energy needs, including at least two advantages and two disadvantages of the chosen system.
14. 5(a)6 marksOutline two reasons why conventional power plants in Caribbean countries are situated along coastlines.
15. 5(b)6 marksDiscuss two environmental impacts on coastal environments caused by the operation of coastal power plants.
16. 5(c)8 marksExplain how cogeneration can decrease the environmental impact of power plants on coastal waters and enhance overall operating efficiency.
17. 6(a)6 marksDescribe two environmental impacts resulting from the use of petrol as an energy source for motor vehicles.
18. 6(b)8 marksDiscuss two approaches Caribbean countries may implement to reduce environmental impacts from motor vehicles.
19. 6(c)6 marksEvaluate the statement that electrically powered vehicles will solve the issues resulting from using petrol in motor vehicles.
20. 7(a)2 marksState the names of two hazardous chemicals that may be found in soils.
21. 7(b)2 marksDescribe the trend shown in Figure 3.
22. 7(c)9 marksExplain why the trend shown in Figure 3 poses a significant threat to humans and other organisms in Country Y, including three reasons with appropriate examples.
23. 7(d)7 marksExplain how human activities in neighboring countries could contribute to the trend shown in Figure 3.
24. 8(a)2 marksExplain what is meant by the term 'water quality standard'.
25. 8(b)(i)3 marksUsing the data in Table 1 and Table 2, assess the suitability of using River Z for recreational purposes.
26. 8(b)(ii)3 marksUsing the data in Table 1 and Table 2, assess the suitability of using River Z as a drinking water source.
27. 8(c)6 marksOutline two reasons for the presence of nitrates in the river water.
28. 8(d)6 marksDescribe two environmental impacts of nitrates on the river ecosystem.
29. 9(a)2 marksIdentify the atmospheric layers labelled A and B in Figure 4.
30. 9(b)2 marksState the names of two gases that play a major role in global warming.
31. 9(c)8 marksWith reference to Figure 4, explain how global warming occurs.
32. 9(d)8 marksAssess the feasibility of two measures proposed to slow global warming.