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.)
River deltas form as silt and other materials begin to accumulate around the mouth of a river. As buildup occurs, it creates other streams for the river water to flow into the larger body of water. This causes a larger delta and well-watered lands. These deltas often create wetlands that are full of diverse ecosystems.