Where does the monongahela feed?

Why is there an eternal flame at the arc de triomphe? How long is the Ct river? The Sahara Desert covers 3 12 square miles Does that mean it is much smaller roughly equal or much larger than the US? Can one river be the base level for another? Why are factories built at the edge of towns beside the sea? Are the oxygen levels same at different depths of water? How does the salt effect the dead sea? What are the main themes in Ansel Adams work? What are Massachusetts main rivers lakes and mountains? Which oceans is Taiwan in? Is Floranada Safety Patrols are going to Busch Gardens or Sea World? Do Jaguars live in or by Machu Picchu? What comprises the actual sea floor beneath sediments? What type of polarization are more efficient when used over sea water at frequency below 100MHz? Why does sea world fingerprint customer? Why don't rivers have salt water? How many parks in sheffield? Who were the other members of Hever Castle? What is the large north American country that spans from Newfoundland on the Atlantic ocean to Vancouver island on the pacific ocean? Which letter identifies the Sahara dessert on the map?