Wood
Rubber
Carbon is a poor conductor of heat and electricity.
No it is an excellent conductor of heat and electricity
A conductor and a switch
Oxygen is a poor conductor of electricity and also heat. It is known to support combustion but its state does not allow it to conduct electricity.
yes
Krypton is a poor conductor of either heat or electricity.
No. It's an excellent conductor of both.
A nonmetal is an element that tends to be dull, brittle, and a poor conductor of heat and electricity.
Conductor Some materials are conductors of Heat OR Electricity. But the property is not the same for one material; example glass is a good conductor of heat but a poor conductor of electricity.
Yes. These are typical properties of nonmetals.
Both Electricity and Heat are forms of energy. If an element were a poor conductor of both it would simply mean that particular element was a poor conductor of energy.
An insulator.