Citizens of EU nations can study, live, or work in any member nation.
Explanation:
The European nations are an economic community of the 28 nations in the world represented by an area of 4,475,757 km. And has developed a single internal market and the system of laws that apply to all the member nations, that ensure the free flow of the goods and services in the market, and as 73 % of the world's population.
The geothermal gradient is measured with the respect to the changes in the temperature of the plates at the various depths. And away from the plate tectonic boundaries it goes on increasing and is expressed the 30 degrees per celsius and the earth internal heat comes to form the planets heat and planetary acceleration.
