Are the items in the list renewable or nonrenewable resources?

choose n for nonrenewable resources.
choose r for renewable resources.

1. petroleum
2. aluminum
3. dirt
4. salmon
5. coal

Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

If scientists only detect p waves in a certain layer of earths interior what does that tell us?

Can someone me choose a broad topic and area of focus i am really doing this as a tally to see which one most people pick ok water pollution global warming endangered species atmosphere for the !