The north american cordillera is a(n)

a) area of volcanism extending from the northeast united states into canada
region of little deformation during the cenozoic era
b) complex mountainous region in the western u. s.
c) broad area of low relief on the east side of the appalachian mountains
d) area along the gulf coast where huge quantities of cenozoic sediments were deposited

(B) complex mountainous region in the western U.S

Explanation: The North American Cordillera covers extensive chains of mountain ranges, plateaus, basins. It covers a length of 6400km.

There are 3 mountain systems in the North American cordillera region.

1. Pacific border province.

2.,The rocky mountain systems.

3. Cascade-Sierra mountains.

it is very hard for the climatologists to precisely predict how will the global temperatures be changing so there's lots of models, some of which differ significantly, this is due to multiple factors, and probably the most important is the human activity.

humans have been a key factor in climate change around the globe since the start of the industrial revolution, and in the past few decades the consequences are becoming more obvious. there's lots of emission of pollutants in the atmosphere as well as changing the environment on the surface itself, so it's really hard to predict how will that go in the future because there's some countries that are reducing the damage and are going towards green energy, while others are stubbornly continuing with pollution and damages to the environment.