2SBS pg.180 #1-8

1) 
Atmosphere: oxygen and nitrogen 
Hydrosphere: water and dissolved minerals
Lithosphere: petroleum and metal-bearing ores

2)
a.
Crust: 40 km thick, contains major raw materials
Mantle: 40-2900 km thick, contains silivates of Mg and Fe and is the middle layer of the lithosphere
Core: 2900 km thick, contains Fe and Ni, center of the earth
b. The crust serves as the main storehouse of chemical resources used in manufacturing consumer products. 

3) 
a. Mexico
b. Japan
c. China

4) China produces the larges masses of the eight listed resources in the table. 

5) Ores and minerals differ because ores are naturally occuring rocks or minerals that can be mined and from which are profitible to extract and minerals are naturally occuring solid compounds containing the element or gorup of elements of interest. 

6)
-The quantity of useful ore found at the site
-The percent of metal in the ore
-The type of mining and processing needed to extract the metal from its ore 
-The distance between the mine and metal-refining facilities and markets
-The metal's supply-versus-demand status
-The environmental impact of the mining and metal processing

7) It could have reopened again because there may be now enough gold for people to start mining again due to the fact it has been inactive for 100 years. 

8) "Useful ore" refers to the ore that can used.