C22U4L4

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Across
  1. 2. something that exists and can be seen, felt, tasted
  2. 5. an important discovery
  3. 7. the line of bones down the centre of the back that provides support
  4. 8. a person's way of thinking and their opinions
  5. 9. very careful and with great attention to every detail
Down
  1. 1. the whole of the human race
  2. 2. extremely careful and correct, and involving a lot of effort
  3. 3. to know about something before it happens
  4. 4. the force that keeps an object moving
  5. 6. to quickly take something in your hand(s) and hold it firmly