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Crop Production and Management
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Microorganisms : Friend and Foe
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Synthetic Fibres and Plastics
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Materials : Metals and Non-Metals
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Coal and Petroleum
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Combustion and Flame
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Conservation of Plants and Animals
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Cell Structure and Functions
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Reproduction in Animals
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Reaching the Age of Adolescence
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Force and Pressure
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Friction
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Sound
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Chemical Effects of Electric Current
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Some Natural Phenomena
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Light
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Stars and The Solar System
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Pollution of Air and Water
Chemical Effects of Electric Current
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