LET'S DO THIS...

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Across
  1. 1. Smallest prime number
  2. 6. Author of 'The Origin of Species'
  3. 8. Continent known as the "Dark Continent"
  4. 9. Instrument used to measure temprature
  5. 12. First man to walk on the moon
  6. 13. Largest desert in the world
  7. 14. Longest river in the world
Down
  1. 2. Gas essential for breathing
  2. 3. Father of the nation
  3. 4. Founder of Microsoft
  4. 5. The study of stars and planets
  5. 7. Capital of France
  6. 10. Planet closest to the sun
  7. 11. National animal of India