Why does Dr. Davis emphasize that people need to return to their hometowns to work?

What occupation did muhammad have before the first revelation

Which is an example of a decomposer? a. bear b.algae c.grass d.bacteria d bacteria

And give a detailed description! scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. does this result support the theory of plate tectonics? why or why not?