known as

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Across
  1. 3. A substance from the environment, such as chemicals, bacteria, viruses, or pollen can be known as an ..........
  2. 4. A writer known as the author of Romeo and Juliet.
  3. 7. What Beijing used to be known as.
  4. 8. He is known as the son of God to Christians.
  5. 9. A German scientist who is well known as the brains behind the theory of relativity.
Down
  1. 1. The chemical in coffee known as a stimulant.
  2. 2. Well known as the language of romance.
  3. 5. A city better known as the Eternal City.
  4. 6. Well known in RHS as the Y13 house.