Across
- 4. A narrow water passage between larger bodies of water.
- 7. Spanish explorer in the Americas in the 1,500s.
- 8. A community of living beings and the surroundings in which they live.
- 10. Resistance of an organism to infection or disease the condition of being unaffected by something.
Down
- 1. a sea route between the Atlantic and Pacific oceans located along the north coast of North America.
- 2. The sharing of power between the national government and state and local government.
- 3. To go around completely to sail around the world.
- 5. Econiomic system in which individuals and buisnesses own the factors of production and buyers and sellers choose to do buisiness with those who satisfy their needs and wants best.
- 6. Natural feature of the earth's land surface.
- 9. A tax on on implants.