| Unit 1(Nutrition in Plants) |
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| Unit 2(Nutrition in Animals) |
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| Unit 3(Fibre to Fabric) |
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| Unit 4(Heat) |
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| Unit 5(Acids, Bases and Salts) |
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| Unit 6(Physical and Chemical Changes) |
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| Unit 7(Weather, Climate and Adaptation of Animals to Climate) |
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| Unit 8(Wind, Storm and Cyclone) |
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| Unit 9(Soil) |
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| Unit 10(Respiration in Organisms) |
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| Unit 11(Transportation in Animals and Plants) |
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| Unit 12(Reproduction in Plants) |
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| Unit 13(Motion and Time) |
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| Unit 14(Electric Current and Its Effects) |
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| Unit 15(Light) |
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| Unit 16(Water : A Precious Resource) |
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| Unit 17(Forests : Our Lifeline) |
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| Unit 18(Wastewater Story) |
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| Answers |
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