Obsidian is natural glass from volcanic activity: how sharp can a flake edge of this material be? What about the edge of a flake of chert or flint?

Due to seriouse dogmatic differences between the orthodox church and the western christian churches, the orthodox xhurch is not in communication with the roman catholic and protestant communities

Which of these titles are within the structure of the united nations? check all that apply. secretary admiral security council general assembly international criminal court economic and social council

I'm at least 150 words, evaluate the pros and cons of the internet and social media for those serving in government