I think it is Sulfur Dioxide (SO2) and Nitrogen Oxides (NOX).
The cycles within which earth's matter moves are closed systems. This means nothing is gained or lost from the system; it only changes from one form to the other. The total amount of matter on earth remains the same. Using tectonic plates as an example, divergent boundaries occur where new oceanic crust is being created. New crust is being created and simultaneously the same amount of crust is being destroyed at convergent margins.
Answer:
The purpose of both the Truman Doctrine and Marshall Plan were to curb the spread of Communism.
Explanation:
The Truman Doctrine was an American foreign policy which stated purpose was to contain Soviet geopolitical expansion during the cold war.
The Marshall Plan was a Economic recovery plan to help recover Western Europe's devastated economy after WW2, and was only available to non-communist nations
Indian ocean
Atlantic ocean
pacific ocean
Answer:
A cultural hearth is the origin location of the cultural trait being spread through diffusion. Therefore, the role it plays in the diffusion of a cultural aspect is being the starting point. From that point on, it will either spread as hierarchical diffusion, stimulus diffusion, relocation diffusion, or expansion diffusion.
