David

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Across
  1. 3. Provide what is needed for something.
  2. 6. The Sun and the planets that move around it.
  3. 8. Heat.
Down
  1. 1. how hot or cold something is.
  2. 2. The study of stars and planets.
  3. 4. The world.
  4. 5. How much something there is.
  5. 7. The outside of something.