Geography Puzzle

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Across
  1. 1. Means of moving people or goods from one place to another
  2. 5. Line dividing Earth into two halves
  3. 7. Ecosystem with specific plants and animals
  4. 8. Very large cities, often with over 10 million residents
  5. 9. Grassland for grazing animals
  6. 11. Clearing of forests, often for human use
  7. 16. Long-term environmental and economic viability
  8. 17. Making something new or replacing something old
  9. 19. Shift of people from rural to urban areas
  10. 23. Measuring line on a map, also known as meridian
  11. 24. Process of turning fertile land into desert
Down
  1. 2. Traveling or wandering without a fixed home
  2. 3. Study of Earth's physical features and human populations
  3. 4. Measuring line on a map, also known as parallel
  4. 6. Number of people or things per unit area or volume
  5. 8. Movement of people from one place to another, often in search of better living conditions
  6. 10. Plant growth, including trees, grasses, and flowers
  7. 12. Map references that pinpoint a location
  8. 13. factor Force driving someone to leave their home country
  9. 14. Poorly built and overcrowded residential area
  10. 15. Transfer of power or authority from a central point
  11. 18. Suitable for farming or cultivation
  12. 20. Amount of water falling from the sky in a given area
  13. 21. Practice of cultivating land for food and other products
  14. 22. Availability of nutritious food for all people