Natural wonders

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Across
  1. 3. The type of water on the salty side of Lake Balkhash.
  2. 6. The first word of the phrase describing the beauty of nature
  3. 7. A place that produces natural electric energy.
  4. 8. One of North America's most famous waterfalls.
Down
  1. 1. One side of Lake Balkhash has this type of water.
  2. 2. The country where Lake Balkhash is located.
  3. 4. The second word of the phrase describing natural beauty.
  4. 5. The first person to cross Niagara Falls was very ____.