I am not completely sure, but I think it might be B, Migration out of a stage 3 or 4 country is higher than migration to it.
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
The effects of acid rain are most clearly seen in the aquatic, or water, environments. For an example, streams, lakes, and marshes.Acid rain flows to streams, lakes, and marshes after falling on fields, forest, roads, and buildings. Acid rain also directly falls on aquatic habits.
The West of the United States has been one of the most important settlements in the colonial America due to its productive industries of cattle ranching and mining. In addition, the territory was coined the "Wild West" because this American Frontier had a rich history of folklore concerning gangs and outlaws.
Question 2 ; the only star that is located in our solar system is the sun
