What are the names of popular beaches?

Why did Niagara Falls freeze in 1932 and 1911? Body of water south of Scandinavia? How old is Reb Beach? Difference between DMD and DDS? Witch way does the mississippi river flow? How did they fix the statues at mt Rushmore? Where can you find the fastest stand up roller coaster? Underground water come to the surface in a spring or well? Are you allowed to swim in horseshoe falls? When was the blue ridge mountain formed? Is Amsterdam located on a river? What is the longest suspension bridge called? Does Switzerland have a Rainforest? Are there any Dead Sea nail products? What is the landscape that starts on the western bank of the Mississippi river and is about 500 miles wide? What kinds of rocks did the sand come from at Great Sand Dunes? What are some ways that Africans use their rivers? What animals live in the Pacific Ocean? What ocean formation is relatively flat and runs parallel to each continent? Why is it easy to walk barefoot on a beach but not on a mountain?