Unit 8 & 9

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Across
  1. 4. Opening in the Earth's surface from which hot molten rocks and gases can escape
  2. 6. Clearing of forests by cutting or burning trees
  3. 7. Breaking down of stones, rocks and minerals over time
  4. 11. Magma that flows on the Earth's surface
  5. 13. Weather conditions of a place over a period of time
  6. 14. Populations of organisms that interact with one another in a habitat
  7. 16. Molten rock found in the Earth's crust
  8. 18. Transfer pollen grains from one flower to another
  9. 19. Melted by heat
  10. 21. Microscopic plant-like organisms found in aquatic habitats
  11. 24. Substances that can wear out rocks, stones and minerals
  12. 26. Using up of resources
Down
  1. 1. Cover formed by the leaves and branches of tall trees in a forest
  2. 2. Related to land or earth
  3. 3. Reduction or removal of industries
  4. 5. (CFCs): Gases that can break down the ozone layer
  5. 8. Shaking of the ground due to movement of the Earth's crust
  6. 9. Things owned by a person
  7. 10. layer: Thin layer of gas in the atmosphere that prevents ultraviolet rays from reaching the Earth
  8. 12. Huge ocean waves caused by an earthquake that occurs underwater
  9. 15. erosion: Removal of the top layer of soil
  10. 17. Outer layer of the Earth
  11. 20. Movement of large amounts of rock and earth down a slope
  12. 22. warming: Rise in temperature on the Earth
  13. 23. Community of living organisms interacting with its non-living environment
  14. 25. crops: Crops grown to cover the soil and protect it