Many of the volcanoes in mainland Alaska and the Aleutian Islands ____

A)are in the Cascade Range
B)were formed over hot spots
C)were formed over divergent plate boundaries
D)have formed within the last 1000 years
E)are composite volcanoes


E

Environmental & Atmospheric Sciences

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What is the relationship between plucking and abrasion on a glacially scoured landscape?

A) Plucking occurs relatively suddenly when a glacier first encounters the landscape, and then if it remains in place for a long time, abrasion begins to happen later over a long period of time. B) Abrasion occurs relatively suddenly when a glacier first encounters the landscape, and then if it remains in place for a long time, plucking begins to happen later over a long period of time. C) Plucking occurs on the upflow side of a mound or hill that is scoured, while abrasion occurs on the downflow side. D) Abrasion occurs on the upflow side of a mound or hill that is scoured, while plucking occurs on the downflow side.

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Los Angeles type smog is primarily a result of

A) smoke. B) fog. C) photochemical reactions. D) advected coastal fog laden with salt crystals.

Environmental & Atmospheric Sciences

Counterurbanization has occurred primarily in

A) the West Coast states. B) the Southern states. C) the Northeastern states. D) the Midwestern states. E) the Rocky Mountain states.

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The infectious disease that poses the greatest risk of death for people living in northern Eurasia and Africa is

A) tetanus. B) measles. C) tuberculosis. D) hepatitis.

Environmental & Atmospheric Sciences