Unit 2 SBS #1-8 (pg. 151)

1. Water and carbon dioxide

2. a. Atmosphere: provides nitrogen, oxygen, neon, and argon
        Hydrosphere: contains water and some dissolved material
        Lithosphere: the solid part of Earth that contains a huge variety of chemical resources
    b. The crust in the lithosphere

3. a. Mexico
    b. Japan
    c. China

4. China

5. Minerals are solid compounds that contain elements, while ores are rocks or minerals that can be mined to extract a metal or other materials. 

6. a. The quantity of useful ore found at the sire
    b. The percent of metal in the ore
    c. The type of mining and processing needed to extract the metal from the ore
    d. Etc.

7. Since technology has advanced, maybe a new object has been created to dig deeper and find more gold in the mine. 

8. "Useful ore" means ore that can be used compared to ore that isn't functional.