<span> The river flows generally west from a source in the </span>Appalachian Mountains<span> to its confluence with the </span>Ohio River<span> near </span>Paducah, Kentucky<span>, and the mouth of the </span>Tennessee River<span>. Major tributaries include the </span>Obey<span>, </span>Caney Fork<span>, </span>Stones<span>, and </span>Red<span> rivers.</span>
In order for the Earth to get larger, more mass would have to be added. Since no new mass is added in the process, It's size doesn't increase.
Erosional landforms occur more often in the colder periods of the year because in this parts of the year there's usually more rain, and also there's snow ,and most importantly ice. The rain and snow contribute to the chemical decomposition of the rocks, while the ice with it's pressure contributes to the physical decomposition of the rocks, by literary increasing it's volume inside the cracks of the rocks and break them from the inside.