I agree that Montana is a perfect example of the various environmental problems facing the world, however i do not agree that mining in Montana is the largest contributor to the socio-trophic cascade facing the state today. I believe it is people such as Diamond, who come to the Bitterroot Valley seeking refuge or relaxation, then decide to stay or buy a home and live in the valley part time.This migration adds to the argument that no where in the world is really untouched, as well as the change in ecosystems, leading to the pollution of our current water supply. This semi-permanent residence also impacts the ability to work and survive within the Bitterroot Valley, resulting in the loss of animals due to increased hunting/fishing, originally leisure activities now a means of survival for some.
The Bitterroot Valley is a good example of not only the various examples of the environmental problems plaguing the world today, particularly because it encompasses so many different ecological habitats in one general area. Mainly mountainous and grasslands, Montana also experiences extreme winters as well as dry periods, though not as extreme as other deserts even within the United States.