Heat and/or light.
No
No
No, because electricity is a secondary energy source, so it's produced by primary energy sources like coal, natural gas, oil, nuclear power, and other natural energy sources.
The sun lifts the water from the oceans to form the clouds that dump the rains that eventually run into the dams that drive the turbines to produce the electrcity.
nobody, it just is.
yes
Resistance
Electrcity bills are linked to the amount of energy used, and a school will get a high bill if a lot of energy has been used, just like all other customers.
Glass+Electrcity=light
Yes, there are now MicroInverters, that turn DC into AC at the inverter level allowing for direct grid supply after passing through a combiner box.
Water condutes electrcity
O