Unit 1

2. using less energy to do the same tasks
8. resources that cannot be made again by people or resources that would take thousands of years for nature to replace
14. use how the land is used
16. group of connected mountains
19. an area of flat or rolling land covered mostly by grasses
20. cold, dry region where trees cannot grow
21. to change
22. the use of canals, ditches, or pipes to move water
23. any area of water extending into the land from a larger body of water
24. basin the land drained by a river system

1. the height of the land in relation to sea level
3. a place where the land drops sharply causing rivers to form waterfalls or rapids
4. a region that has similar landforms throughout
5. the surroundings in which people, plants, and animals live
6. a long inlet that separates offshore islands
7. the largest inlet
9. resources that can be made again by people or nature
10. dry climate
11. a stream or river that flows into a larger stream or river
12. vegetation plant life that grows naturally in a place
13. the kind of weather a place has over a long period of time
15. a river and its tributaries
17. resource something found in nature that people can use
18. the gradual wearing away of the Earth's surface