Conductivity

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Good day!
I was studying and I got thinking.
Some biological masses like the body can act wholly as conductors of electricity. Though, such a mass(the body) contains insulators as well as conductors on it various levels; cellular and other wise, yet it still conducts electricity. With that, some thoughts popped up, thus; firstly, is it possible to get a conductive inorganic substance like a solid copper mass fitted with insulative impurities? Secondly, if yes, would it still conduct electricity?

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Amy Cowen
Science Buddies