It's a stage of the very important Nitrogen cycle. All living things need Nitrogen, without it there is no life.
Eastern boundary currents are associated with the cooling off of the ocean waters. These currents originate from both of the poles, they bring cold, shallow, slow water towards the lower latitudes and cools of the water near the Equator. Once there they are warming up and move in the opposite direction as westward warm currents.
A. 40 percents of the world pop and half of the economic outcome.
I think (IM NOT COMPLETELY SURE) its profit incurred on a good or service.
B. It forms part of the border between Mexico and the United States. Mexico is far south, and the great lakes are way up north by Canada.
