1 Hamartia: Many people who discuss tragedy often mention the hero's 'fatal' or 'tragic flaw.' However, Aristotle would never accuse a hero of such a personal defect. 2  Instead, he asserted that they were guilty of hamartia, or missing the mark.
Floodplains are landscapes shaped by running water. As streams and their larger forms, rivers, flow across the surface of land, they transport eroded rock and other material. (Erosion is the gradual wearing away of Earth surfaces through the action of wind and water.)
If a river meets a barrier, either a natural dam or a fabricated one, a lake will result from the buildup of water. Underground water may rise to the surface through land shifts, erosion, or springs to make a lake. Saltwater lakes can also be created by land cutting off a part of the ocean. Essentially, wherever water gathers without an outlet, a pond or lake will form. More than 300 rivers feed Lake Baikal in Russia.