Across
- 2. areas that they influence
- 3. a place where buyers and sellers deal for grain
- 5. artificial waterways
- 8. communication by electronic means
- 9. a dark-colored organic material
- 10. the band of Southern states from Carolina to Southern California
- 13. a very large city
- 14. an imaginary line between the Appalachian Mountains and the Atlantic coastal plain
Down
- 1. the average number of days between the last frost of spring and the first frost of fall
- 4. large pipes that carry water over long distances
- 6. tall building equipped with machinery for loading, cleaning, mixing, and storing grain
- 7. a dry, treeless plain that sprouts grasses and mosses only in the summer
- 11. the marshy inlets of lakes and rivers
- 12. rank
- 13. tropical trees that grow in swampy areas