How did the savanna get destroyed?

What is the percentage in people going for zoos then against zoos? How was the carajas mine started? How do you spell Hoover Dam? How do they replace lighthouse bulbs when many are now unmanned? What is winter in the Grand Canyon called? What are the plant found in rivers and streams? Major river on vietnams western border? What is the area of Myrtle Beach Pavilion? Are cardinals legal to be kept in a cage? Why do waves move toward the shore but the leaf floating on the surface of the water does not? How did Clinch River get its name? How deep is nickerson lake Maine? What five rivers make Punjab the land of five rivers? How much years to build the Mettur Dam? The River Niles estuary? What are the advantages of using river pebbles over mulch in landscaping? What crops grow near the indus river? What happens in the sky above the Statue of Liberty on the Fourth of July? Why is a toilet called a Jon? What are the three deserts in California?