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EXERCISE NO. 1 Abiotic Factors Affecting Organisms Living organisms occupying a tending(p) habitat are exposed to conditions which are largely define by the nature of the physical environment they inhabit. Thus, the various abiotic factors that substantiate up the environment are the prime determiners of the abundance, distribution and over-all bionomics of the biotic units of the ecosystem. The abiotic components are the complex physical factors which include the climatic factors (light, temperature, humidness and wind), the edaphic factors (soil nutrient, pointity and moisture) and the topographic factors (angle of slope and altitude). According to A. G. Tangsley (1935), the biotic components could non be separated from the abiotic with which they form one physical unit, the ecosystem. Objectives: 1.To demonstrate the students with the antithetic climatic and edaphic factors. 2.To know the standard procedures used in measuring stick these factors. 3.To determine variations in the physical environment in a small area consisting of grasses and trees. 4.To identify organisms found in twain areas. 5.To analyze how individual organisms respond to their physical environment.

Materials: gradational force (10m) Thermometer Meter stick Psychrometer Aluminum pans Shovel Soil corer pH meter digital weighing apparatus Gloves Beaker (150 ml) Test tubes ice rod Spatula/ knife Droppers Plastic bags/ taste bags Oven Muffle furnace crucible or aluminum dish Dessicator Ammonium oxalate 10% HCl Diphenylamine sulphuric acid (H2SO4) Ammonium molybdate Concent rated Nitric acid (HNO3) Distilled pee 70! % ethanol Light source White makeup Forceps Magnifying lens Small jar or vial Stereomicroscope millimeter ruler Procedure: A.Climatic Factors 1.Choose an area with twain near types of environment (preferably a grassy area adjacent to an area with trees). 2.Lay a...If you wish to get a abundant essay, order it on our website: BestEssayCheap.com

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