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Environmental systems & societies · 2008 · November · Paper 2 · SL · Question paper

Environmental systems & societiesQuestion paper2008SLNovember

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This question paper is listed under Environmental systems & societies in the 2008 examination archive. Its catalogue level is SL. The catalogue session is November. The information below helps you identify the document before opening the complete PDF. Subject, year and session labels come from the archive catalogue; the original cover remains the reference if a label differs. A file is not automatically suitable for your current syllabus simply because its subject name matches.

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8808-6411 9 pages N08/4/ENVSY/SP2/ENG/TZ0/XX Monday 17 November 2008 (afternoon) EnvironmEntal systEms standard lE vEl Pa PEr 2 INSTRUCTIONS TO CANDIDATES • Write your session number in the boxes above. • Do not open this examination paper until instructed to do so. • Section A: answer all of Section A in the spaces provided. • Section B: answer one question from Section B. Write your answers on answer sheets. Write your session number on each answer sheet, and attach them to this examination paper and your cover sheet using the tag provided. • At the end of the examination, indicate the numbers of the questions answered in the candidate box on your cover sheet and indicate the number of sheets used in the appropriate box on your cover sheet. 1 hour 15 minutes [Personal identifier removed] © International Baccalaureate Organization 2008 8 8 0 8 6 4 1 1 0 1 0 9 8808-6411 – 2 – N08/4/ENVSY/SP2/ENG/TZ0/XX Section a Answer all the questions in the spaces provided. 1. The table below shows the amount of organic matter (biomass), nitrogen and phosphorus, above and below ground, in two areas of woodland in Australia. Ecosystem A has regenerated after complete destruction by fire 15 years ago. Ecosystem B has remained undisturbed for 55 years. ecosystem a (regenerated) / kg ha-1 ecosystem B (undisturbed) / kg ha-1 above ground organic matter (standing timber, leaves, litter) 27 000 51 536 Below ground organic matter (roots) 25 782 42 393 above ground nitrogen 117 142 Below ground nitrogen 47 104 above ground phosphorus 8 8 Below ground phosphorus 4 7 [R F Parsons, “Eucalyptus scrubs and shrublands”, in Richard H Groves (ed.), Australian Vegetation, 2nd edition, (1994), Cambridge University Press] (a) Calculate the average annual net productivity above ground for ecosystem A, assuming all plant material was destroyed in the fire. Show your working. ....................................................................... ....................................................................... [2] (b) Calculate the percentage of the total biomass that is below ground for each of the two ecosystems. Show your working. (i) Ecosystem A: . . . . . . . . . . .
File information
Subject
Environmental systems & societies
Document type
Question paper
Year
2008
Session
November
Level
SL
Paper
2
Examination zone
Not labelled in the archive
Language
Not labelled in the archive
File size
279 KB
Pages
9
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