Lesson 24 What's your idea for a cleaner world?

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Across
  1. 3. idea
  2. 5. rocks
  3. 7. last
  4. 8. caller
  5. 9. world
  6. 10. river
Down
  1. 1. first
  2. 2. beach
  3. 4. cleaner
  4. 6. spider