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2005 2009 Higher School Certificate Trial Examination Biology General Instructions · Reading time – 5 minutes · Working time – 3 hours · Write using black or blue…
Creating Compounds Creating Compounds What are elements, compounds & mixtures? An element is the smallest part of a substance (matter) that still retains all the properties…
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Weathering & Erosion Weathering & Erosion Vid I. Weathering …is the breakdown of rock due to exposure to the atmosphere. Physical Weathering: any process that causes…