What is the average width of the river roding?

What is a shallow body of water that has an opening to the ocean but is also protected by a sandbar or coral reef? What is a ring of coral that encloses a pool of seawater? Is the arctic ocean east? How high is Empire State Building? What is the origin of the name Big Ben? Is Yellowstone a intraplate volcanism? What continent can coast and rivers be found on? Who is Amado M Pena Jr? Where is the summit of Mount Everest? Is south china sea Chinese? Is sea of tranquility exist on earth? When was Wide White Space Gallery created? What are wall that built to hold back water? Is the 3 largest oceans the pacific Atlantic and Arctic ocean? How old did you have to be to work on the great wall? What are the coordinates for the statue of liberty? Where are the great lakes of africa located? What is a desert's name that starts with p in the US? Where is the Stevens County Historical in Colville Washington located? Can you swim in the sea of japan?