What causes heat & light in a wire?

The electrical current through the wires itself causes the home wiring to heat up. This is because as the electrons flow they come across the resistive forces of the medium's material, releasing energy that is expended in the form of heat energy

Explanation:

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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i believe the answer would be:

d. violin, clarinet, french horn, and tuba