<span>Much of the commercially important waterways of the United States consist of the Mississippi River System—the Mississippi River and connecting waterways. .... States on the Gulf Coast and throughout the Midwest and Ohio Valley ...</span>
Copernican heliocentrism<span> is the name given to the astronomical </span>model<span> developed by </span>Nicolaus Copernicus<span> and published in 1543. It positioned the </span>Sun<span> near the center of the </span>Universe<span>, motionless, with Earth and the other planets rotating around it in circular paths modified by epicycles and at uniform speeds. The Copernican model departed from the </span>Ptolemaic<span> system that prevailed in </span>Western culture<span> for centuries, placing Earth at the </span>center of the Universe<span>, and is often regarded as the launching point to modern </span>astronomy<span> and the </span>Scientific Revolution.
Explanation:
There are two plate tectonics. The the arrows that are going outwards show that there are one on each arrow because, the line splits them in half and it said that it split them in half in the directions.
