Yngen Mind Reset_2

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Across
  1. 3. A precious metal symbolized as "Au"
  2. 6. A polygon with eight sides
  3. 7. Capital city of Canada
  4. 8. The study of living organisms
  5. 9. The fastest land animal
Down
  1. 1. A Shakespearean tragedy featuring a Moorish general
  2. 2. The largest mammal on Earth
  3. 4. Ancient wonder located in Egypt
  4. 5. A famous painting by Leonardo da Vinci
  5. 7. The chemical element with symbol "O"