How is Victoria falls being Conserves and studied?

What is the difference in a ditch and a creek and a stream? How does a difference in water temperature affect the movement of water in lakes and oceans? When were castles important? What climate type is found in Brazil near the Amazon river? Name the deserts covering the great western plateau? What are some slogans for the pyramid of Giza? What river has its source 200 hundred miles from the Atlantic ocean yet flows 2600 miles before reaching the coast? What country or countries is ontario lake located in? Where is baikal? What is the area of land that is drained by a river source mouth estuary or drainage basin? How does the rainfall of grassland like this compare to deserts and forests? Who physically built the Great Wall of China? Do turtles eat coral? Does Hugh live at river cottage? What medium is the Leaning Tower of Pisa in? Where is the source of the Orinoco River? What is Indianapolis known for? How much money did the US give Columbia for the canal land? Where were the prisoners of Alcatraz transferred to? Where the gulf of mexico is in the map?