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which materials are poor conductors of heat which materials are bad conductors of heat materials that are poor conductors of heat and electricity substances that are poor conductors of heat which material is a poor conductor of heat aluminium copper wood iron which material is poor conductor of heat class 7 which material is poor conductor of heat aluminium copper wood iron which of the following materials are poor conductors of heat which material is poorest conductor of heat name two materials which are poor conductor of heat
