What is middle course?

What object weighs 30 tons? What would happen to the water temperature in the surface zone if convention currents did not form there? Is the Sahara Desert located on the Equator? Why should we visit Yellowstone volcano? What are the days and opening hours of the Terracotta Warriors? What is the chain of island in the south Pacific? Summit road in santa cruz county? When was Teide National Park created? Why aren't desert lakes salty? Why do you use a train to cross the Channel tunnel rather than driving dirrectly through in your car? Is it Disney World or Disneyworld? How many castles are there on or near by the River Thames? Is there vagetation around the mountain Everest? How did the great wall of China influence everyday life in ancient china? What is one troy ounce of silver worth? How was a castle made and what materials were used? Who was given credit for asking how long the Sidney Lanier Bridge is? What places in the Philippines have windmills? Where are youthful rivers usually found? What is the temperature in the Atlantic ocean?