8th gradeee

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Across
  1. 4. basic unit of life
  2. 6. transfer of heat from one place to another, hot to cold or cold to hot
  3. 7. amount of matter in an object
  4. 9. Change in speed or direction
  5. 14. makes their own food
  6. 16. the natural movement of air in the atmosphere
  7. 17. when the whole species dies out
  8. 18. non-living things
  9. 21. where stars are formed
  10. 24. basic unit of everything
  11. 25. negative charged sub atomic particles
  12. 26. mass of air surrounding the earth
Down
  1. 1. the explosion when some stars die out
  2. 2. weather change due to the position of earth around the sun
  3. 3. large storm that forms over war ocean water
  4. 5. breaks down dead material
  5. 8. a ____ front brings warmer and dry air
  6. 10. unit of mass for atoms
  7. 11. eats producers
  8. 12. a ____ front brings cold and raining weather
  9. 13. living things
  10. 15. how high something is compared to sea level
  11. 19. only eats other animals
  12. 20. anything that has volume and mass
  13. 22. how many difference species in an ecosystem
  14. 23. Push or a pull
  15. 25. what separates the northern and southern hemisphere