Baby Names Beginning With "K": Meaning: Noble, Gentle?

Questions

Though the -------------- sprawl measures 15 miles wide by 15 miles long, most of the 30 million tourists each year tend to mob the 6-mile stretch of -------------- Boulevard that includes both the Strip, home to the city's glittering, impressive major casinos, and the downtown area.?

Tonto Natural Bridge in ---------- is the largest natural travertine bridge in the world, spanning Pine Creek 183 feet high. Mineral springs rich with limestone formed the massive bridge one drop at a time. Hats, shoes, or other items left in the creek become encrusted with travertine and appear to be made of stone.?

The largest bird colony in the world is located on the islands off the coast of Peru. Ten million Peruvian boobies and cormorants reside there. Their diet - anchovies - produces the world's finest fertilizer, guano. Because of the value of their droppings, the birds were placed under strict protection by the -------.?

Tourists who are eager to visit recently erupted volcanoes while on vacation should take heed. Volcanic ash has been known to remain hot for a period of nearly --------------?

The largest city on the Mississippi River is -----------------?