Why do most earthquakes occur along tectonic plate boundaries?

What group has historically made up the largest portion of immigrants in mexico?

In 2009, the author pawel bozyk, described brazil as a newly industrialized country. while its economy had not yet reached that of highly developed countries, brazil has moved itself into being a significant member of the international economy. what economic model does brazil fit into, regarding its development path?

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d