Fire safety

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Across
  1. 2. Dangerous explosion of air and flame when oxygen enters a fire starved room
  2. 4. fire starting again after seeming out
  3. 6. Chemical reaction of burning that releases heat
  4. 7. Able to catch fire easily
Down
  1. 1. Easy-burning material that starts fire easily
  2. 3. common cause of home fires
  3. 5. Controls and protects circuits