CAPE Environmental Science Unit 1 · 2011 · Paper 2

39 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)(i)1 markState the type of symbiotic relationship shown in Figure 1.
2. 1(a)(ii)4 marksExplain how the symbiotic relationship identified in (a)(i) could result in a population curve resembling Figure 1.
3. 1(a)(iii)3 marksEvaluate the statement that the presence of Species 2 acts as a limiting factor for Species 1, providing one reason to justify your response.
4. 1(a)(iv)3 marksDetermine after how many months the difference in population size between Species 1 and Species 2 reaches its maximum, showing how the answer was determined.
5. 1(a)(v)1 markIdentify the minimum population size of Species 1 shown on the graph.
6. 1(b)(i)4 marksReproduce the outline of the ecological pyramid and label each trophic level with the correct organism chosen from: Cricket, Lizard, Grass, Mongoose.
7. 1(b)(ii)4 marksUsing the completed ecological pyramid from (b)(i), explain how energy flows through an ecosystem.
8. 2(a)5 marksName and describe the method you would employ to collect sampling data to determine the species diversity of non-mobile organisms on a Caribbean coral reef.
9. 2(b)(i)4 marksUsing Figure 3, determine the number of individuals of each of the four species.
10. 2(b)(ii)1 markCalculate the percentage of the total individuals represented by Haliclona lehnerti.
11. 2(b)(iii)4 marksCalculate the species diversity for the coral reef.
12. 2(c)(i)2 marksDefine what is meant by ecosystem stability.
13. 2(c)(ii)4 marksExplain why an ecosystem with low species diversity may exhibit poor stability.
14. 3(a)3 marksName three types of population pyramids classified by mortality and fertility rates.
15. 3(b)(i)6 marksState one deduction regarding population growth that can be made for each of Country X, Country Y, and Country Z.
16. 3(b)(ii)2 marksIdentify which country's pyramid represents a developing country, giving a reason for your choice.
17. 3(c)(i)3 marksDiscuss how age of marriage affects the human population growth rate.
18. 3(c)(ii)3 marksDiscuss how family planning services affect the human population growth rate.
19. 3(c)(iii)3 marksDiscuss how government policy affects the human population growth rate.
20. 4(a)(i)2 marksComplete the bar chart by inserting the missing bars for Country B (urban) and Country C (rural), assuming each country's population consists only of rural and urban inhabitants.
21. 4(a)(ii)3 marksCompare the urban and rural population distribution across the three countries.
22. 4(a)(iii)4 marksExplain how population growth in Country B may have resulted in its observed population distribution.
23. 4(b)6 marksOutline two environmental impacts associated with the pattern of population distribution seen in Country C.
24. 4(c)(i)2 marksDefine the term sustainable development.
25. 4(c)(ii)3 marksExplain how population increase can impair a country's ability to achieve sustainable development.
26. 5(a)3 marksName any Caribbean country and identify two of its natural resources.
27. 5(b)8 marksGive four reasons explaining the importance of one of the natural resources identified in (a) to that named Caribbean country.
28. 5(c)(i)1 markState the year in which the new road was constructed.
29. 5(c)(ii)3 marksExplain how building the new road affected the illegal tree harvesting trade.
30. 5(c)(iii)3 marksExplain how the new environmental policy affected the illegal tree harvesting trade.
31. 5(c)(iv)2 marksState how long it took for the rate of illegal tree harvesting to return to the level recorded prior to road construction.
32. 6(a)1 markState one reason why natural resources should be conserved.
33. 6(b)3 marksExplain how the practice of waste reduction and minimisation leads to natural resource conservation.
34. 6(c)(i)2 marksName two measures that can be used to encourage industries to practise waste reduction and minimisation.
35. 6(c)(ii)4 marksExplain how one of the measures identified in (c)(i) persuades industries to practise waste reduction and minimisation.
36. 6(c)(iii)3 marksDiscuss one action that would support the effective implementation of these measures within the Caribbean.
37. 6(d)(i)3 marksCalculate the percentage reduction in total suspended solids in the effluent after the entire treatment process.
38. 6(d)(ii)2 marksCalculate the percentage reduction in total suspended solids after effluent passes through two ponds.
39. 6(d)(iii)2 marksState whether four settling ponds are necessary for adequate pollution control at this quarry, giving one reason to justify your answer.