nature of things
Ques 18
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grouping and classification of objects
Ques 18
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conservation of water
Ques 19
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forms of water
Ques 20
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forms of water and water cycle
Ques 20
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rain: where does it come from
Ques 20
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grouping of materials
Ques 21
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availability and forms of water
Ques 21
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properties of materials
Ques 21
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ocean circulation
Ques 23
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