Answers

2014-12-09T20:26:30+05:30
Sry i dont know by mistake i clicked on ans

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2014-12-10T21:40:53+05:30
Limestone- CaCO3
uranium- radio active material
sulphur- a dangerous material
siesmology- reading of earthquake
terminoloy is the study of terms and its uses
copper- a wiring material
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