Answer:

1) In case of temperature if the conductor have POSITIVE temperature coefficient then the resistance will increase by increasing the temperature. If the conductor have negative temperature coefficient then the resistance will decrease by increasing the temperature.

Explanation:

2) Electrical Conductivity of material depends largely to the escaped electron of the material (metals). It depends on their amount, the type of building of the ATOMS form (crystal), and its geometry, the strength that is required to "loose" an electron from the metal and temperature.

So yes, the electrical resistance depends on the quality of the material.

It should be noted that the mean speed of the free electrons in a conductor is of the form of a few μm PER second.

Moreover, if the voltage is relatively HIGH enough, even insulators can be discerned by electrons that are required by the high voltage to deduce from the otherwise ELECTRICALLY "stable" molecules; lighting infiltrates air or a semiconductor