Homework

3. Occupies the earth’s center below the mantle
4. Solid, relatively low density rock
6. Have an unlimited supply or are easily replenished
7. The study of earth
9. The belief that earth-forming processes are natural,have always been the same,and have always happened at the same gradual rate
11. Boundary between the crust and the mantle
12. Cannot be replenished,or are hard to replace

1. The effort to oversee and control the use of natural resources is called resource management
2. Idea of an ancient earth
5. Any raw resource that we use from our environment
8. The upper mantle is about 40 mi thick between the ocean basin crust and 80-160 mi thick under the continents
10. Takes up 84% of the earth’s volume