Words: difference, combination, composition, creative, electricity, explanation, abundance, passive, conversation, quotation, existence, circulation, activity, destructive, communication, disturbance, excellence, experience, addition, resistance.

1. the heart controls the_____________ of blood.
   
2. The title of his ___________ was "Sources of Energy".
   
3. the telephone is a _____________ tool.
   
4. Winnie received an award for _______________ in Science.
   
5. Many people do not believe in the ___________ of UFOs.
   
6. I memorized the _______________ to the lock for my locker.
   
7. Our long-distance phone ___________ lasted an hour!
   

PLEASE HELP ME WITH THEESE QUESTION!

ASAP!!!!