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Across
  1. 5. all the water on Earth
  2. 7. water that falls back to Earth's surface
  3. 8. a period of time that is 24 hours long
  4. 10. all the air on Earth
  5. 12. all organisms on Earth
  6. 13. consumer that only eats meat
  7. 15. consumer that eats both plants and meat
Down
  1. 1. something scientists make to answer questions about the real world
  2. 2. when a liquid turns into a gas
  3. 3. the pull between earth and other objects
  4. 4. when a gas turns into a liquid
  5. 6. matter that is only made of one kind of atom or molecule
  6. 9. all the land on Earth
  7. 11. consumer that only eats plants
  8. 14. when water falls back to Earth and refills bodies of water (rivers, lakes, oceans)