Answer:
Conductors conduct electrical current very easily because of their free electrons. Insulators oppose electrical current and make poor conductors. Some common conductors are copper, aluminum, gold, and silver. Some common insulators are glass, air, plastic, rubber, and wood.
Explanation:
A type of material that tries to prevent the flow of thermal energy is called an insulator.
We can use renewable sources
There are 3 significant figures, if that answers the question.