English is easy

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Across
  1. 4. being or seeming to be everywhere at the same time, omnipresent
  2. 5. able to adapt or be adapted to many different functions or activities
  3. 7. made or produced by human beings rather than occurring naturally
  4. 9. having passionate energy for a belief or purpose
  5. 10. capable of being broken down especially into innocuous products by the action of living things (such as microorganisms)
  6. 11. a triangle with unequal sides
  7. 12. material that is used to stop the passage of electricity, heat, or sound from one conductor to another
Down
  1. 1. a triangle with three equal interior angles
  2. 2. act of unnecessarily postponing decisions or actions
  3. 3. converted into carbon or a carbonic residue
  4. 6. a triangle in which all three sides have the same length
  5. 8. the measure of the ease at which an electric charge or heat can pass through a material