Explanation:
Rare property of obsidian that is advantageous to archaeologists is that it occurs in volcanic flows that are remarkably homogeneous in chemical composition within a flow, but preserve elemental signatures that are unique to volcanic centers, and in some cases individual flows.
When voting for a president you need to think of what they do for your Country. As an example, will the President add good founding to your area, will the President make fair rights? You need to keep all those things in mind while voting.
The cotton gin was a machine for separating cotton from its seeds.
Jeff karsone the man of many words
Rome is in the middle of Italy. Italy is the Mediterranean country found in the southern middle part of Europe and looks like a boot.
