LIFE SCIENCES Paper 2 Memo (Eng) November 2009

Life Sciences/P2 9 DoE/November 2009NSC – Memorandum3.3 3.3.1 Aluminium10000 10 100 or x %95000 95 1= 10,5%Aluminium10000 10 100 or x %105000 105 1= 9,5%ORPaper3000 3 100 or x %7000 7 1= 42,8%Paper3000 3 100 or x %10000 10 1= 30%Aluminium uses a smaller percentage of energy (5)3.3.2 • Pollution/dumping is reduced since more scrap/materials willbe used• Less demand for land since fewer rubbish dumps would berequired• Cost effective/economical since decreased need for newraw materials/materials re-used• Creates jobssince more recycling plants will be established• Reduce exploitation of natural resources due to lowerdependence on raw materials 3 x 2 (6)(Mark first THREE only) (11)3.4 BiodegradablePollutants that can be broken downby organisms such as bacteria and fungie.g. any organic waste/faeces/vegetable matter, etc.Non-biodegradablePollutants that cannot be broken down by organisms such as bacteria andfungie.g. glass/plastic, etc.(4)[30]TOTAL SECTION B: 60Copyright reservedPlease turn over