CAPE Environmental Science Unit 1 · 2005 · 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 marksUsing an example of EACH, distinguish between 'carbon sinks' and 'carbon sources'.
2. 1(b)(i)5 marksWith the use of an annotated diagram, outline the movement of carbon between the atmosphere and the biotic components of the terrestrial ecosystem.
3. 1(b)(ii)6 marksWith the use of an annotated diagram, outline the phosphorous cycle.
4. 1(c)(i)1 markIdentify the MAJOR difference between the carbon cycle and the phosphorous cycle.
5. 1(c)(ii)4 marksOutline the MAJOR consequence of the difference between both cycles indicated in (c)(i).
6. 2(a)5 marksGroup the organisms shown in the food web in their respective trophic levels.
7. 2(b)5 marksExplain how energy becomes incorporated in this ecosystem.
8. 2(c)4 marksOnly a small percentage of energy incorporated into the ecosystem is available to the barracuda. Suggest TWO reasons for this.
9. 2(d)6 marksExplain how this community might be altered if the population of sea urchins died out.
10. 3(a)8 marksUsing specific examples, describe TWO impacts of humans on ecosystems.
11. 3(b)12 marksOutline FOUR reasons why it is important for human beings to maintain the integrity of ecosystems.
12. 4(a)5 marksCalculate the percentage of the population in the age group ranging from 0 to 19 years.
13. 4(b)6 marksDescribe how the growth rate of the population will be determined by the age group ranging from 0 to 19 years.
14. 4(c)7 marksOutline the impact on the environment that this population could have if it grows at the rate discussed in (b) above.
15. 4(d)2 marksState TWO characteristics of the population that can be inferred from the age structure diagram.
16. 5(a)(i)2 marksDefine the term 'total fertility rate'.
17. 5(a)(ii)2 marksDefine the term 'life expectancy'.
18. 5(b)6 marksWith reference to Table 1, outline the relationship between the total fertility rate and the life expectancy for the Ethiopian population.
19. 5(c)6 marksSuggest TWO reasons for the low percentage of Ethiopian women using contraceptives.
20. 5(d)4 marksSuggest an approach aimed at decreasing the fertility rate of Ethiopian women.
21. 6(a)3 marksList SIX general characteristics of persons living in poverty.
22. 6(b)4 marksState and define TWO international indices used to rank the development status of countries.
23. 6(c)6 marksPopulation growth in a country will lead to an increase in poverty levels. Do you agree with this statement? Justify your answer.
24. 6(d)7 marksDiscuss how increasing levels of poverty can hinder the ability of a country to achieve sustainable development.
25. 7(a)3 marksDescribe the trends indicated in Figures 3 and 4.
26. 7(b)5 marksCould the problems experienced by the fishing industry have been prevented? Justify your response.
27. 7(c)6 marksOutline THREE approaches to deal with the current problems being experienced in the fishing industry.
28. 7(d)6 marksAssess the effectiveness of TWO of the approaches outlined in (c) above in a Caribbean context.
29. 8(a)8 marksDescribe TWO functions of mangroves in Caribbean ecosystems.
30. 8(b)8 marksDiscuss TWO main impacts on mangroves in Caribbean ecosystems which result from developmental activities.
31. 8(c)4 marksOutline TWO appropriate methods of conserving mangroves in a Caribbean country.
32. 920 marksDiscuss FOUR factors that should be considered in determining the feasibility of mining this resource.