Crossword - The longevity project

12345678910
Across
  1. 3. Continuing to say or do something without giving up.
  2. 4. To continue to do something even though it is difficult.
  3. 7. To search for more information about someone or something.
  4. 8. Using a lot of energy and strength.
  5. 9. Sensible and careful.
  6. 10. A feeling that something is too difficult to continue
Down
  1. 1. Careful to do everything that is in your job or duty.
  2. 2. An important new discovery.
  3. 5. To become very successful or very strong and healthy.
  4. 6. A period of ten years.