What layer of the rainforest do hummingbirds live on?

Is xi jiang one of the major river of china? What is the latitude and longitude of the Amazon basin? How tall is house in meters? What traty with Great Britain demilitarized the great lakes and lake Champlain? What website can you build a roller coaster on? What cities would have been on the shoreline of the gulf of Mexico during the upper Cretaceous? Which sect is associated with the Dead Sea Scrolls? What does a marshall do in a middle age castle? How much does it cost to go in the children museum? Why do farts burn? Do tulips grow in the forest? What does a candle flame suddenly turns blue a ghost is nearby mean? Can sea water be desalted? What is the area of the oceans from biggest to smallest? What are the types of features that form from glacial erosion? What are the glass like structures on the sponge? How can you get to Yellowstone National Park by train? How much does it cost to build a zoo? Why should zoos never be banned? What country lies just north of the outs?