What process produces most caves?
A) the dissolving action of groundwater on rock, especially on limestone
B) the dissolving action of groundwater on rock, especially on marble
C) the dissolving action of streams on rock, especially on marble
D) the dissolving action of glaciers on rock, especially on marble
A
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A continental margin facing a spreading ridge is considered ____ and ____
A) a passive margin; converging B) a passive margin; diverging C) an active margin; diverging D) an active margin; converging
Describe how changes in vorticity in the upper troposphere can lead to changes in surface pressure
What will be an ideal response?
What causes the Sun's heat?
A. energy release from nuclear fusion B. energy release from nuclear decay C. energy release from nuclear fission
Large crystals such as garnet surrounded by a fine-grained matrix in a metamorphic rock are called:
A) vesicles B) phenocrysts C) inclusions D) porphyroblasts