Trivia Friday

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Across
  1. 3. - the most popular pet in the world
  2. 5. - animal symbol of the USA
  3. 7. - most popular soccer team in the world
  4. 10. - gas that humans breath
Down
  1. 1. - capital of the USA
  2. 2. - the most popular food chain in the world
  3. 4. - the biggest feline in America
  4. 6. - first colour in the rainbow
  5. 8. the second most popular pet in the world
  6. 9. - the most populous city in the world (urban area)