Mercosur is a shorter form of "Mercado Comun del Sur" - Common Market in the South, which is a trading bloc (area with free trade and no tariffs or restrictions) in South America.
The correct answer is:
<span>an arrangement to increase economic cooperation</span>
Answer:
Gobstones was a magical game mostly popular amongst wizarding children, similar to the Muggle game of marbles. The only difference between the two games was that Gobstones was played using special stones that squirted a putrid liquid at the player when they lost a point.
Explanation:
An implicit agreement among the members of a society to cooperate for social benefits, for example by sacrificing some individual freedom for state protection. Theories of a social contract became popular in the 16th, 17th, and 18th centuries among theorists such as Thomas Hobbes, John Locke, and Jean-Jacques Rousseau, as a means of explaining the origin of government and the obligations of subjects.
I think oxygen and carbon dioxide i'm not sure though
