Earth and Space Spheres

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Across
  1. 2. An interaction between Birds and them flying through the wind
  2. 5. The variety of all living things in a specific area
  3. 7. Step 7 of the Scientific Method
  4. 10. The C in CER
  5. 11. All sources of water on Earth
  6. 13. All land, solid & liquid dirt, minerals on Earth
  7. 18. A set of interacting components that work together
  8. 19. An interaction between a Seahorse and the Ocean it swims in
  9. 20. An interaction between Humans and them digging up fossils
  10. 21. All gasses found on Earth
  11. 23. What you have to write before on Step 1 of the Scientific Method
  12. 24. A specific communication or direct involvement between 2 things
  13. 25. An educated guess
  14. 26. The variable being measured in an experiment
  15. 27. When you summarize and conclude your experiment
Down
  1. 1. All frozen water on Earth
  2. 3. All living things on Earth
  3. 4. A list of all the things you will need in an experiment
  4. 6. Step 6 of the Scientific Method
  5. 8. All man made objects and structures
  6. 9. A numbered set of steps for an experiment
  7. 12. The E in CER
  8. 14. The R in CER
  9. 15. The variable being changed in an experiment
  10. 16. An interaction between Polar Bears and them living in the Artic
  11. 17. The variable that is NOT being changed
  12. 22. An interaction between Humans and Black bag of Hot Cheetos