It might be conservation energy if it isn't that that I don't know what else it'd be.
This process is known as thermohaline circulation. In the Earth's polar regions ocean water gets very cold, forming sea ice. As a consequence the surrounding seawater gets saltier, because when sea ice forms, the salt is left behind. As the seawater gets saltier, its density increases, and it starts to sink.
b. small buisnesses find it harder to compete
Wisconsin became a state in 1848
