General Structure and Writing Style. The function of a research design is to ensure that the evidence obtained enables you to effectively address the research problem logically and as unambiguously as possible.
ALLEGHENY RIVER HISTORY. Location: A river rising in north-central Pennsylvania and flowing about 523 km (325 mi) northwest into New York then southwest into Pennsylvania again, where it joins the Monongahela River at Pittsburgh to form the Ohio River.
Great Lakes Flow. The animation illustrates how water flows from one Great Lake to another and eventually to the Atlantic Ocean. This profile view of the lakes demonstrates that water flows from Lake Superior to Lake Michigan and Huron. Lake Huron then empties into Lake Erie. At the end of Lake Erie the water level drops nearly 170 feet as it goes over Niagra Falls and into Lake Ontario. From here the water travels through a series of locks that bring it to sea level, out the St. Lawrence Seaway, and to the Atlantic Ocean.