Across
- 1. is the process of removing salt from ocean water in order to make it drinkable
- 3. all the plants and animals
- 7. vent on the earth's surface where molten rock and gas is released
- 12. _____ farming consists of cutting steps into a mountain to create farmable land
- 15. are built to prevent flooding from rivers or other bodies of water
- 16. all the air/gasses in the world
- 18. a long period with little or no rain
- 19. anything people can use that comes from nature
- 20. powerful, funnel-shaped column of moving air
- 21. caused by underwater earthquakes or volcanic eruptions in the ocean. Can be 70ft tall
- 25. movement of people from the countryside to the cities
- 28. someone who seeks safety by going to another country
Down
- 2. brings warm waters, rain, and mild winters to the Americas
- 4. occur when tectonic plates crash into or slip past one another
- 5. early civilizations settled along or near these
- 6. the amount of people living in a given area
- 8. lines run vertically on a map/globe
- 9. the earth's crust
- 10. the chance to do or get something
- 11. something that encourages people to move to a new place
- 13. something that encourages people to leave a place behind
- 14. circular storm that forms over warm, tropical waters
- 17. all the water in the world
- 22. instead of adapting to fit the environment, many times humans will try to change the environment to fit their needs
- 23. brings cold waters, droughts, and harsh winters to the US
- 24. lines run horizontally on a map/globe
- 26. in order to survive many conditions, humans must ____ or adjust to the environment
- 27. humans ____ on the environment when they use the environment to meet their needs