What characteristic feature of Pennsylvanian rocks distinguishes rocks of the Absaroka sequence from those of the Kaskaskia sequence, as well as others in North America?

A)cyclothems
B)carbonates
C)coal
D)conodonts
E)chordates


A

Environmental & Atmospheric Sciences

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The rock shown here, with sediment just visible to the naked eye, is a



A) sandstone.
B) shale.
C) conglomerate.

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What is the common name of Cu+?

A) copper ion B) cuprate ion C) cupric ion D) cuprous ion

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When two species behave in ways that benefit both by providing each with food, shelter, or some other resource, it is called ____.

A. mimicry B. coevolution C. parasitism D. commensalism E. mutualism

Environmental & Atmospheric Sciences

There are two basic types of volcanoes, shield and composite cone.  Which of the following best describes composite cone volcanoes?

A. relatively small, erupt basaltic magma, and are highly explosive B. relatively large, erupt basaltic magma, and are highly explosive C. relatively large, erupt andesitic magma, and are non-explosive D. relatively large, erupt basaltic magma, and are non-explosive E. relatively small, erupt andesitic magma, and are highly explosive

Environmental & Atmospheric Sciences