what makes the vegetation so diverse in the american west?           the amount of rainfall varies greatly in the west. the pacific northwest is well known for cloudy days and regular precipitation, whereas the deserts in the southwest have little precipitation. vegetation varies accordingly.

The diagram below shows an ornithiscian dinosaur, an ancient bird called archaeopteryx, and the modern day bird. based on the diagram, which of these statements is most likely correct? (2 points) modern day birds have evolved from dinosaurs. archaeopteryx has evolved from modern day birds. ornithiscian dinosaurs had evolved from modern day birds. ornithiscian dinosaurs had evolved from the archaeopteryx.

The point where two air masses meet is called a

__ has (or have) been one of the most common pull factors of migration within the united statesa. lack of humanityb. gamblingc. seafoodd. well paying jobs