EARTH'S CHANGING ENVIRONMENT

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Across
  1. 5. THE CONCENTRATION OF MATTER IN AN OBJECT
  2. 6. SUBSTANCES THAT CAUSE POLLUTION
  3. 10. A NON-HUMAN PROCES THAT CAN CAUSE INJURY, LOSS OF LIFE OR LOSS OF PROPERTY
  4. 14. WHAT ALL SCIENCE INQUIRY STARTS WITH
  5. 15. THE DURATION OF AN EVENT
  6. 16. OCCURS WHEN THERE IS A PATTERN TO AN EVENT IN NATURE
  7. 18. THE AMOUNT OF SPACE AN OBJECT TAKES UP
  8. 19. THE DISTANCE BETWEEN TWO POINTS
Down
  1. 1. AN INTERPRETATIN OF AN OBSERVATION
  2. 2. A FORM OF MATTER COMMON ON EARTH
  3. 3. LESS DENSE AS A SOLID THAN A LIQUID
  4. 4. A MEASUREABLE PART OF THE ENVIRONMENT
  5. 7. OCCURS WHEN PROPERTIES OF THE ENVIRONMENT HAVE BEEN ALTERED
  6. 8. WHEN A CHANGE OCCURS IN A SYSTEM
  7. 9. A TYPE OF INFERENCE ABOUT THE CONDITIONS OF THE ENVIRONMENT
  8. 11. THE STUDY OF EARTH AND ITS POSITION IN OUR UNIVERSE
  9. 12. A SENSE THAT GATHERS INFORMATION
  10. 13. AN INSTRUMENT USED TO AID IN OBSERVATION
  11. 17. HARMFUL TO PEOPLE, AND OTHER LIFE ON EARTH
  12. 19. THE AMOUNT OF MATER IN AN OBJECT