COM-, COL-, COR-, CO-, CON- “WITH, TOGETHER”

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Across
  1. 3. to crash with something
  2. 4. taking 2 things and putting it together
  3. 9. to work together
  4. 10. worried with feeling
  5. 12. to work together with others
  6. 14. putting scraps of plants together and combining into something better
  7. 15. a person who gathers things together
  8. 17. to keep things together
  9. 18. something that sticks together
Down
  1. 1. working together
  2. 2. people who work together for a reason
  3. 5. to check the answers together
  4. 6. to communicate with others
  5. 7. when something accidental happens with people
  6. 8. to make someone switch their opinion with evidence
  7. 11. to put together
  8. 13. when you put things together
  9. 16. people or things who work together to survive