6.How does the Clayoquot Sound UNESCO Biosphere Reserve help address the Question: "How can we use Earth's resources
sustainably?"

Ithink 2.2 ibs i think i learned a bit about it

The answer is c - the principal of original lateral continuity. 

Remember that rust prevented by placing a sacrificial electrode in electrical contact with the iron. the sacrificial electrode must be composed of a metal that  oxidizes  more easily than iron (that is, it must be below iron in table 18.1).