Science Puzzle

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Across
  1. 4. People breath
  2. 6. The cycle that water goes trough
  3. 9. A giant spiral in the sky with strong winds
  4. 10. They send electric signals throughout your
  5. 12. A storm that starts on the water
Down
  1. 1. Has a well-known method
  2. 2. Study of life
  3. 3. Ours orbit the sun
  4. 5. They make Oxygen
  5. 7. A liquid that has its own cycle
  6. 8. This supports your body
  7. 11. Your walking on it
  8. 13. Your body is made of them