What is the difference between an ecoregion and a region?

The blank theory suggests that the sun, planets, and other celestial bodies of the solar system came from a cloud of dust and gas? a.) condensationb.) steady state c.) big bang d.) nebular

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?

The point where two air masses meet is called a