The role of carbon containing compounds inliving organisms.38. How the structure of cells is related to theirfunction (June 2002).16. The biological importance of water (Jan 2003)OR The role of water in the lives of organisms.11. The rising temperatures mayresult in physiological and ecological effectson living organisms. Roles of pigments in living organisms.46. Enzymes and their importance in plants andanimals (Jan 2005).26. The part played by the movement of substances across cell membranes in thefunctioning of different organs and organssystems (June 2008).32. The importance of lipids in living organisms.14. Gas exchange in animals and flowering plants.18.
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The factors affecting the growth and size of populations.20. Genetic variation and speciation.43. The causes of disease in humans (June 2010).37. Mean temperatures are rising in many partsof the world. Cycles in Biology my best teacher essay in tamil (June 2003).21. The production and elimination of metabolicwaste products in living organisms.10. The process of osmosis and its importance toliving organisms (June 2004).23.
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