A lot
coolant is used to keep the reactor cool and prevent it from melting down. The amount of cooling that is required really depends on the the amount of heat being put into the coolant.
Only the wildlife that used the power plant site before it was built
1.7% of Pakistan electricity is produced by nuclear power stations
Most nuclear power stations use uranium enriched to 3% uranium-235 isotope. The nuclear power stations in France include some reprocessed plutonium mixed with the enriched uranium. A small number of nuclear power stations were designed with fast neutron breeder reactors and used uranium enriched to as much as 93.7% uranium-235 isotope. As more of the uranium-238 (or thorium-232) in the breeding blanket was transmuted to fissionable plutonium (or uranium) isotopes, the breeding blanket material would be reprocessed and these fissionable isotopes would be used to replace the original spent uranium. But only a small number of such nuclear power stations were built and the system for reprocessing of the breeding blanket material was not set up.
20% of the worlds power is generated by nuclear power
A high pressure will be able to push the coolants into the heater cores.
a lot
Depends on the size and power rating of the reactor. Some low power experimental reactors like CP-1 (first reactor in the world) and CP-2 (made from parts of CP-1 after it was shutdown) have none at all. CP-1 never operated at more than 1/2 watt power at any time.
The UK's decommissioned nuclear power stations are located at various sites around the country, including Calder Hall in Cumbria, Windscale in Cumbria, Trawsfynydd in Gwynedd, and Bradwell in Essex. These sites are being decommissioned and dismantled as part of the country's nuclear decommissioning program.
The old magnox reactors-Bradwell, Berkeley, Hinkley Point A, Hunterston A, Sizewell A, Dungeness A, Trawsfynedd. I think Oldbury and Wylfa may still be operating but not for much longer.
Indiana has no nuclear power plants.
In most places, electrical power is provided in a grid, with various power sources providing power and users getting power. Most people do not have a single source, or even a single type of source, for their power. In much of the world, nuclear power stations are included in the power mix, and anyone who uses power from the grid gets some power from nuclear plants. From an economic point of view, it is possible customer to stipulate the power source paid for the power they consume. It may cost more for renewable power, for example, but some people choose to do so.