Puzzle?

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Across
  1. 2. pictures of Yosemite?
  2. 3. They come in last
  3. 4. Smartest person alive
  4. 5. Strips in geography class
  5. 7. One charging a flat rate?
  6. 8. Rubber from the Middle East
  7. 9. Whirlybird
Down
  1. 1. Have no brain and are 98% water
  2. 5. Colds that last a long time
  3. 6. Brother powder?