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##### Chapter 1: Crop Production and Management

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##### Chapter 2: Microorganisms: Friend and Foe

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##### Chapter 3: Synthetic Fibres and Plastics

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##### Chapter 4: Materials: Metals and Non-Metals

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##### Chapter 5: Coal and Petroleum

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##### Chapter 6: Combustion and Flame

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##### Chapter 7: Conservation of Plants and Animals

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##### Chapter 8: Cell - Structure and Functions

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##### Chapter 9: Reproduction in Animals

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##### Chapter 10: Reaching the Age of Adolescence

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##### Chapter 11: Force and Pressure

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##### Chapter 12: Friction

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##### Chapter 13: Sound

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##### Chapter 14: Chemical Effects of Electric Current

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##### Chapter 15: Some Natural Phenomena

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##### Chapter 16: Light

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##### Chapter 17: Stars and The Solar System

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##### Chapter 18: Pollution of Air and Water

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