hard

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Across
  1. 4. A literary device that uses exaggeration for effect
  2. 6. The phenomenon where light bends as it passes from one medium to another
  3. 7. A scientific theory that explains evolution through natural selection
Down
  1. 1. The branch of mathematics dealing with the relationships between the sides and angles of triangles
  2. 2. The SI unit of electric current
  3. 3. The process by which plants convert light energy into chemical energy
  4. 5. A literary device that repeats the same word or phrase at the beginning of successive clauses