Ecosystem

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Across
  1. 3. Ocean is to salt as river is to
  2. 4. Urban is to buildings as tundra is to
  3. 5. This type of pollution kills fish and aquatic life
  4. 10. The natural home or environment of an organism
  5. 11. Rainforest is to equator as taiga is to _____
  6. 12. Process by which green plants make their own food using sunlight
  7. 13. Type of ecosystem that helps reduce floods in coastal areas
  8. 17. Sun is to photosynthesis as decomposer is to _______
  9. 18. The variety of life in the world or in a particular habitat
  10. 20. Aquatic is to lake as terrestrial is to _______
Down
  1. 1. Installing solar panels reduces reliance on which ecosystem-disrupting resource?
  2. 2. Large, dry, and often hot areas with minimal rainfall
  3. 6. A community of living organisms and their physical environment
  4. 7. Soil is to earthworm as air is to _______
  5. 8. Coral reef is to ocean as _______ is to forest
  6. 9. Green roofs in cities mimic which natural ecosystem?
  7. 14. A method farmers use to reduce soil erosion and conserve ecosystems
  8. 15. Predator is to prey as herbivore is to _______
  9. 16. Roots are to plants as _______ is to fungi
  10. 19. Forest is to oxygen as desert is to ____