Puzzle #38

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Across
  1. 2. To improve or enhance
  2. 4. Country is known for the Great Wall
  3. 7. Scientific study of rocks and minerals
  4. 8. Large, round citrus fruit
  5. 9. Sacred song or poem
Down
  1. 1. Transparent covering of the eye
  2. 3. A female sibling
  3. 5. Noble gas used in signs and lighting
  4. 6. Thin, cylindrical pasta
  5. 7. A mythical creature with a lion's body and an eagle's head