CAPE Environmental Science Unit 2 · 2006 · Paper 2

29 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)2 marksIdentify TWO forms of soil degradation associated with excessive irrigation.
2. 1(b)16 marksExplain how EACH form of soil degradation identified in (a) occurs.
3. 1(c)2 marksRecommend ONE sustainable practice in agriculture to address EACH form of degradation identified in (a) above.
4. 2(a)2 marksWhat is meant by 'mechanization of agriculture'?
5. 2(b)10 marksDescribe FIVE factors that limit the mechanization of agriculture in the Caribbean.
6. 2(c)8 marksJustify the statement: 'Agroecosystems are different from natural unmanaged ecosystems.'
7. 3(a)2 marksDistinguish between 'mariculture' and 'aquaculture'.
8. 3(b)12 marksDescribe THREE management techniques that are used for increasing the yield of aquaculture.
9. 3(c)6 marksDiscuss TWO environmental issues resulting from the practice of aquaculture in the Caribbean.
10. 4(a)6 marksConsidering predictions based on Figures 1 and 2, suggest the impact on Caribbean countries if the projected change in annual demand for electricity and oil production is realized.
11. 4(b)14 marksDiscuss TWO alternative energy sources that Caribbean countries can exploit to address the impact identified in (a) above, including advantages and disadvantages of exploiting both energy sources.
12. 5(a)(i)5 marksExplain the function of control rods in a nuclear energy plant.
13. 5(a)(ii)4 marksExplain the function of the primary water circuit in a nuclear energy plant.
14. 5(b)11 marksEvaluate the recommendation: 'Caribbean countries should satisfy their growing demand for electricity though the use of nuclear energy rather than building new conventional fossil fuel power plants', considering…
15. 6(a)4 marksUsing a suitable example in each case, distinguish between 'energy conservation' and 'energy efficiency'.
16. 6(b)6 marksEvaluate the statement: 'The implementation of measures to conserve and use energy more efficiently is the best and cheapest means of making more energy available.'
17. 6(c)10 marksDiscuss TWO ways in which the transportation sector in your country could conserve energy.
18. 7(a)3 marksOutline the trend shown in Figure 3.
19. 7(b)2 marksIdentify the TWO major types of water pollutant existing in the coastal waters of Island Z.
20. 7(c)(i)2 marksFor EACH of the pollutants identified in (b) above, state its nature.
21. 7(c)(ii)2 marksFor EACH of the pollutants identified in (b) above, state its source.
22. 7(d)4 marksExplain how the loss of coral cover could be caused by ONE of the pollutants identified.
23. 7(e)7 marksOutline a water treatment process that would address the high levels of faecal coliform in coastal waters.
24. 8(a)2 marksWhat is a 'refuse derived fuel' incinerator?
25. 8(b)18 marksDiscuss the use of incinerators as a MAJOR method of solid waste disposal in Caribbean countries, considering at least TWO advantages and THREE disadvantages.
26. 9(a)(i)8 marksWould you recommend that humans eat the game birds that are caught? Justify your answer.
27. 9(a)(ii)4 marksDescribe ONE technological process that can be used to clean up soil contaminated with hazardous waste.
28. 9(b)(i)3 marksWhat is the 'Basel Convention'? Include at least TWO of its features in your response.
29. 9(b)(ii)5 marksExplain why the Basel Convention was developed.