What are the branches of the Smithsonian?

What river is the city Chicago located? The beautiful building on the Acropolis? Why do oceans and lakes need salt? Where is the US ambassador's residence in Vilnius Lithuania? What country is the Schonbrunn Palace located in? How are animals of the coniferous forest well adapted to long cold winters? Where are the most of the deserts found in east Asia? What unique challenges might a scientist face when trying to understand coral reefs? What river dumps into the Pacific Ocean? What are the benefits and problems associated with using public land for multiple uses? WHAT are the top ten longest rivers in Zimbabwe? Did other missions have bells? How many miles is it from Sedona AZ to the Grand Canyon? Could you see the lighthouse of Alexandria from 50 miles away? How are sediments deposited along the bottom of an ocean floor according to size? What are some animals that Cherokee Indians eat? What 19th century invention made it possible to use americas larger rivers as an effective transportation network? Three types of tourism? Through which states does the Missouri river flow? How did the Nile river affect the lives of the early Egyptians and Nubian's?