EASY

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Across
  1. 1. an instrument that is used for shaving
  2. 2. an object that is completely round
  3. 4. trust in somebody's ability or knowledge
  4. 5. to wake up
  5. 6. an idea or a principle
  6. 7. an arm or a leg
  7. 8. knowing or realizing something
Down
  1. 1. to improve something by making small changes to it
  2. 3. a collection of cells that form the different parts of human, animals and plants
  3. 5. created by people, not happening naturally