SCIENCE

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Across
  1. 5. The substance that carries electrical current (5 letters
  2. 6. The star at the center of our solar system
  3. 9. The force that keeps us grounded (9 letters)
  4. 12. Perform photosynthesis during daylight
  5. 14. The process by which animals make offspring (7 letters)
  6. 20. The process plants use to make food (8 letters)
Down
  1. 1. The gas we breathe in
  2. 2. The study of the Earth’s structure
  3. 3. Largest planet in our solar system (7 letters)
  4. 4. The Earth's natural satellite (5 letters)
  5. 7. Planet closest to the Sun
  6. 8. A planet with rings (6 letters)
  7. 10. One of contagious disease by virus
  8. 11. The gas that plants absorb from the air for photosynthesis
  9. 13. The human body's largest organ (4 letters)
  10. 15. Basic unit of life (5 letters)
  11. 16. The force that pulls objects toward Earth (7 letters)
  12. 17. The part of a plant that absorbs water (5 letters)
  13. 18. H2O
  14. 19. A solid formed from minerals (4 letters)