Where does the ocean start?

Why is the Rhine river important to western central Europe? What are the main marine habitat? Which national flags are sealed in Mount Everest? How much does is ths toll to cross the San Francisco Oakland Bay Bridge? Benghazi on the Mediterranean sea east of Tripoli is an important port for what north African country? How does the area settled by the Greeks differ from early settlements if the fertile crescent Nile river valley Indus river valley and ancient china? What is the truth about Bermuda triangle? What is the name of the process whereby a platform with many wells is secured to the ocean floor? What is the number of tributaries for the river yellow? What is the boundary of a drainage basin? What is the pebbles at the bottoms of rivers called? Distinctive rock sequences on South America terminate at the Atlantic Ocean but reappear on the continent of? What is the continent between Atlantic ocean and Indian Ocean? What are the countries in north gulf? Where is the Smithsonian American Art Museum located? What seas are around Macedonia? What is Versailles used for now? What are the danger if someone falls into a crevasse? What Is A Good Sentence For Mid Ocean Ridge? How many species of salmon are found at the North Cascades National Park?