Across
- 3. a large population concentration made up of several large and many smaller cities, such as the area between boston and washington, d.c
- 7. religious settlment
- 11. industries invovled in the production, distribution and marketing of farm products, supplies, and equipment
- 12. a resource formed in the Earth by plant and animal remains
- 14. a farming method used in dry regions in which crops are grown that rely only on the natural precipitation
- 17. a steep cliff or slope between a higher and lower land surface
- 20. a smaller river or stream that feeds into a larger river headwaters the source of a stream or river
- 22. precipitation carrying large amounts of dissolved acids, which kills wildlife and damages buildings, forests and crops
- 24. haze caused by the interaction of ultraviolet solar radiation with chemical fumes from automobile exhausts and other pollution sources
- 25. public land set aside for Native American settlements
- 26. to withdraw
- 28. the creation of a variety of businesses and industries to fuel economic growth
- 29. a high point or ridge that determines the direction rivers flow
Down
- 1. chemical product derived from petroleum or natural gas
- 2. economy that emphasizes services and technology rather than industry and manufacturing
- 4. a large, powerful windstorm that forms over warm ocean waters
- 5. a boundary in the eastern united states where the higher land of the piedmont drops to the lower Atlantic Coastal Plain
- 6. a blast of cold northern air that sweeps across the plains, causing winter temperatures to drop below freezing
- 8. a mild climate region in the southern and southwestern portions of the united states
- 9. region that includes a central city and its surrounding suburbs
- 10. a concentrated region of manufacturing industries in the northeastern and midwestern United States
- 13. process by which a body of water becomes too rich in dissolved nutrients, leading to plant growth that depletes oxygen in the water
- 15. a channel or pipeline for carrying a large quantity of flowing water
- 16. musical form that developed in the United States in the early 1900s, blending African rhythms and European harmonies
- 18. the removal of all trees in a stand of timber
- 19. a manufacturing plant owned by a foreign company
- 21. a network of safe houses in the United States that helped thousands of enslaved people escape to freedom
- 23. legal proceeding in which a borrower's rights to a property are relinquised due to his or her inability to make payments on the loan
- 27. agent who contracted with mexico to settle families in texas