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Across 3. treeless expanses of grasses 6. giant core of rock centered on the Hudson and James bays (2 Words) 7. marks where the high land of the Piedmont drops to the lower Atlantic Coastal Plain (2 Words) 8. summer thunderstorm that often spawns Tornadoes 10. River that runs from Minnesota to New Orleans Louisiana, 2,357 miles (2 Words) 11. Mediterranean scrub vegetation of Southern California 12. highest point on North American Continent (20,320 ft.) (2 Words) 15. the source point for a river 16. fish farming, raising fish or ocean life to harvested as a crop 19. Territory in Subarctic Western Canada (2 Words) 20. Coal, Petroleum, Natural Gas (2 Words) 22. elevation above which trees cannot grow 24. Mountain Range in Western North America that stretch from New Mexico to Alaska (2 Words) 25. very large in size, quantity, or extent 27. Geographic feature of the US (2 Words) 28. gather together or acquire an increasing number or quantity of 29. wetland and swamp in Florida 30. warm dry wind that blows down the Eastern slopes of the Rockies in spring 31. a particular form of procedure for accomplishing or approaching something, especially a systematic or established one

Down 1. decisive or critical, especially in the success or failure of something 2. Range runs from Quebec to Central Alabama (2 Words) 4. high point or ridge that determines in which directions rivers flow 5. smaller river or stream that comes off a large one 9. Lakes Huron, Ontario, Michigan, Erie, and Superior, formed by Glacial action in North America (2 Words) 13. location good for catching fish or other sea animals 14. the ability to see outdoors 17. Storm with wind of above 35 miles per hour and heavy or blowing snow 18. Territory in Northeast Canada 21. desert in the American west where the highest recorded temperature 134° F. (2 Words) 23. ocean storms hundreds of miles wide with winds above 74 miles per hou 26. recognizably different in nature from something else of a similar type