Observable Characteristics

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Across
  1. 1. Often caused by land clearing and overgrazing
  2. 3. Commonly from farms, roads, mining, and landfills
  3. 6. Coastal, alpine, and woodland are examples
  4. 9. Essential for life; can carry respiratory risks if polluted
  5. 10. Water with a pH less than 4.8 is considered this
  6. 12. Ecosystem affected by water quality issues
  7. 13. App used in biodiversity fieldwork
  8. 16. Soil biota are essential for this organic process
  9. 18. The loss of this contributes greatly to species extinction
  10. 19. Dark, nutrient-rich soil component
  11. 20. Large vegetation growth often indicates high levels of this in soil
  12. 21. Variety of life and its interactions in nature
  13. 25. Aquatic life depends on this to survive
  14. 26. Upper layer of forests contributing to biodiversity
  15. 27. Excessive amounts can trigger harmful algal blooms
  16. 28. Refers to animal species in an ecosystem
Down
  1. 2. One of the air pollutants monitored by the EPA
  2. 3. Indicates how acidic or basic a water sample is
  3. 4. Measure of how clear water is
  4. 5. A critically endangered Victorian possum
  5. 7. High levels of this in soil harm plant life
  6. 8. Plants absorb carbon dioxide through this process
  7. 9. Overgrowth of this can reduce water quality
  8. 11. Water with low turbidity has high what?
  9. 14. Radiation absorbed by Earth’s atmosphere to protect life
  10. 15. All ecosystems together make up this global system
  11. 17. test, Measures how salty soil has become
  12. 22. This process can carry pollutants into water systems
  13. 23. Clearing land contributes to erosion and salinity
  14. 24. Carbon monoxide and sulphur dioxide are examples