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18)I) metallic Pan has a wooden HANDLE because wood is a bad conductor of heat and electricity.II) because light colour clothes spread lights.III) we prefer DARK colour clothes in winter because dark coloured coats absorbs light.lV) we sit in front of a room heater we get it from it because warm air is LIGHTER than the cold air so warm air is on the surface of the floor.V) we prefer to use two thin blankets joined together than a thick BLANKET because there is a space between the two thin blanket so we get air.VI) hollow bricks are used to CONSTRUCT buildings because in bdo's break the iron rod are kept to make tower of the building.19)I) the pan becomes hot when it is kept on flame because metal is a good conductor of heat.II) because one hate is lighter than the cold air



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