Kid Crossword Puzzle

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Across
  1. 2. The planet we live on (5 letters)
  2. 4. The force that pulls objects toward the Earth (9 letters)
  3. 5. The primary color between blue and yellow (6 letters)
  4. 7. The process by which plants make their food using sunlight (12 letters)
  5. 9. The hard outer covering of an egg (5 letters)
  6. 10. The longest animal in the world (9 letters)
  7. 11. A liquid that is essential for all life (4 letters)
  8. 13. A body of land completely surrounded by water (7 letters)
Down
  1. 1. A type of bear found in China (6 letters)
  2. 3. The gas we breathe in to stay alive (6 letters)
  3. 6. The longest river in the world (4 letters)
  4. 8. A shape with four equal sides (8 letters)
  5. 12. The name of our dog