The Geography of the USA

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Across
  1. 1. the study of the earth and its physical features such as its mountains and rivers as well as the study of the distribution of living things on our planet
  2. 3. which ocean runs along the west coast and completely surrounds Hawaii?
  3. 6. United States is the third largest country in the world after Russia and ...
  4. 7. climates in the U. S. play a key role in its.. (plural)
  5. 9. which river is the longest in America?
Down
  1. 2. the largest state of America
  2. 4. which plant grows in harsh environment climate (like in the desert) instead of trees? (singular)
  3. 5. which state has the largest population with 36 million people?
  4. 8. a branch of geography which examine the distribution of human populations
  5. 10. how many basic regions of the United States are?