CAPE Environmental Science Unit 2 · 2021 · Paper 2

37 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)2 marksDefine the term 'hydroponics'.
2. 1(a)(ii)2 marksState TWO features of sustainable agriculture.
3. 1(a)(iii)4 marksSuggest TWO reasons why aquaponics may be considered a sustainable agricultural practice.
4. 1(b)(i)5 marksUsing the provided grid, plot a bar graph showing the revenue derived for dasheen ONLY over the five-year period.
5. 1(b)(ii)3 marksList THREE trends evident in Table 1.
6. 1(b)(iii)4 marksBriefly explain TWO reasons why cultivating nontraditional crops may contribute to food security in the Caribbean region.
7. 2(a)(i)2 marksDefine the term 'plantation agriculture'.
8. 2(a)(ii)1 markState ONE crop which was cultivated in the Caribbean using this system.
9. 2(b)(i)4 marksDiscuss TWO impacts of the use of technology on plantation agriculture in the Caribbean region.
10. 2(b)(ii)4 marksOutline TWO ways in which plantation agriculture has impacted the natural environment of the Caribbean region.
11. 2(c)(i)1 markState the year in which the production of sugar cane was 50 000 metric tons.
12. 2(c)(ii)1 markUse the data presented in Figure 1 to estimate the total production from agricultural products in 2012.
13. 2(c)(iii)3 marksUse the data presented in Figure 1 to predict the total production of agricultural products in 2017.
14. 2(d)4 marksSuggest TWO reasons why there was an increase in the production of agro-processed goods over the seven-year period.
15. 3(a)(i)3 marksName the types of energy, I, II and III, involved in the energy conversion process.
16. 3(a)(ii)3 marksExplain why one of the types of energy labelled on the diagram is usually considered 'unwanted'.
17. 3(b)(i)2 marksState TWO environmental impacts of energy use in the Caribbean.
18. 3(b)(ii)4 marksDiscuss how energy use can result in ONE of the environmental impacts stated in (b)(i).
19. 3(c)(i)3 marksExplain why, in terms of energy production, the depletion of energy resources is classified as a cost to society.
20. 3(c)(ii)5 marksCalculate the total cost to society of the particulate matter formation in a hard-coal-fired power plant. Express this value as a percentage.
21. 4(a)3 marksList THREE types of alternative energy sources, other than geothermal energy.
22. 4(b)5 marksIn tropical environments, geothermal energy can be used to cool homes. Explain how this works, by fully annotating the provided diagram (i), (ii), (iii), and (iv).
23. 4(c)(i)5 marksSketch a line graph in the space below to illustrate the data presented in Table 2.
24. 4(c)(ii)1 markUse the data in Table 2 to state ONE trend that is shared by ALL three Caribbean countries.
25. 4(c)(iii)6 marksThe electricity generation values presented in Table 2 are quite low. TWO factors that affect electricity generation capacity are demand patterns and economic costs. Explain how demand patterns and economic costs may…
26. 5(a)(i)3 marksWhat is meant by the term 'synergistic effects'?
27. 5(a)(ii)3 marksExplain the impact of the synergistic effect on the environment when a dispersant is sprayed on an oil spill to clean it up.
28. 5(b)(i)3 marksDescribe the general trend of the data shown in Figure 5.
29. 5(b)(ii)3 marksCalculate the difference in the volume of oil spilled from tankers between the 1970s and 1980s.
30. 5(c)(i)4 marksDiscuss ONE impact that an oil spill would have on the economy of a Caribbean country.
31. 5(c)(ii)4 marksAt a school debate you are asked to justify why preventing an oil spill is more effective than cleaning up a spill that has occurred. Discuss ONE argument to support this opinion.
32. 6(a)(i)3 marksIdentify any THREE receptors for the pesticide that was sprayed on the farm in Figure 6.
33. 6(a)(ii)2 marksDefine the term 'biomagnification'.
34. 6(a)(iii)4 marksIn Figure 6, the numbers in brackets refer to the concentration of the pesticide found in each organism. Using this information, draw a flow chart to illustrate the concept of biomagnification on this farm.
35. 6(b)(i)3 marksThe farmer on the farm in Figure 6 is concerned about pesticides getting into the stream. Explain how pesticides may get into the stream even though the farmer is careful about spraying only crops that are far from the…
36. 6(b)(ii)3 marksState THREE steps that may be taken to determine whether the pesticide is entering the stream.
37. 6(b)(iii)5 marksDiscuss ONE mitigative method to prevent pesticide pollution in the stream.