Sand grains can be distinguished from silt grain by ________.

A. the gritty feel between the teeth
B. composition of the grains
C. only by a microscope
D. the gritty feel between the fingers.
E. seeing the individual sand grains


Answer: D

Environmental & Atmospheric Sciences

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A. Deep rocks are exposed at the surface and yield young isotopic ages. B. The top of Mount Everest contains a limestone with marine fossils. C. Uplift can be measured with a global positioning system (GPS). D. All of these choices are correct.

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Indicate whether the statement is true or false

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Which country of Southeast Asia has been troubled by tensions from its orthodox Muslim region known as Aceh?

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