By the (Early/Middle/Late)____________________ Cambrian most of North America was covered by

epeiric seas with the exception of a highland known as the _________________________. Fill in the blank(s) with the appropriate word(s).


Late, Transcontinental Arch

Environmental & Atmospheric Sciences

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The main chemical weathering processes all take place more or less simultaneously because they all require the presence of ________

A) water B) air C) hydrogen D) plants E) salt crystal growth

Environmental & Atmospheric Sciences

Fractured rock masses tend to weather more easily than massive monolithic ones of the same

composition. Indicate whether the statement is true or false.

Environmental & Atmospheric Sciences

The initial formation of Earth involved the solidification and cooling of ________

A) sediments B) magma C) metamorphic rocks D) ice E) strata

Environmental & Atmospheric Sciences

With a pulley having 2 strands supporting a load, to lift the load 1 m you pull a distance of

A. 2 m. B. 1 m. C. 1/2 m. D. more than 2 m.

Environmental & Atmospheric Sciences