Across
- 4. The science and practice of mapmaking
- 6. The physical features of a landscape
- 7. A slowly moving mass of ice formed from compacted snow
- 9. Height above sea level
- 10. The statistical study of populations
- 13. Meeting present needs without compromising future generations
- 17. Permanently frozen ground found in polar regions
- 18. A dense, tropical forest with high rainfall
- 19. When a population exceeds the carrying capacity of its environment
- 21. An underground layer of water-bearing rock or material
- 23. A winding curve or bend in a river
- 25. The capacity of an ecosystem to support human demand
- 29. An area where all precipitation drains to a single point
- 31. Seasonal wind that brings heavy rain to South and Southeast Asia
- 32. The average weather conditions in an area over a long period
- 33. A narrow strip of land connecting two larger land areas
- 39. A large natural elevation of the Earth's surface
- 40. The process of being worn away by natural forces
- 42. The breakdown of rocks by wind, water, or chemical processes
- 43. Extremely dry; lacking moisture
- 44. A grassy plain in tropical and subtropical regions
- 45. A mountain with a crater that can erupt with lava and ash
- 46. Relating to cities or towns
- 49. The number of people living in a particular area
- 50. Landform where a river splits before entering a larger body of water
Down
- 1. Basic physical systems like roads, water supply, and power
- 2. The growth of cities and the movement of people into them
- 3. The process of dropping sediment carried by wind, water, or ice
- 5. A dry, barren area with little rainfall
- 8. The ability to recover quickly from environmental or social shocks
- 11. Debris deposited by a glacier
- 12. The distance north or south of the equator
- 14. The clearing or thinning of forests by humans
- 15. Farming of a single crop over a large area
- 16. A deep, narrow sea inlet bordered by steep cliffs
- 20. The movement of people from one place to another
- 22. A major ecological community with distinct climate and life forms
- 24. The process by which fertile land becomes desert
- 26. A chain or cluster of islands
- 27. Marine organisms that build reef structures in warm seas
- 28. The increasing interconnectedness of people and economies
- 30. Processes involving the structure and movement of Earth's crust
- 34. A large sea wave caused by underwater earthquakes or volcanic eruptions
- 35. Where a river meets the sea, mixing fresh and saltwater
- 36. A vast body of salt water that covers much of Earth
- 37. A large continuous mass of land
- 38. A natural flowing watercourse, usually towards an ocean or sea
- 41. The total value of goods and services produced in a country
- 47. All ecosystems and living organisms on Earth
- 48. An elevated flat area of land
