The most widely accepted explanation for chains of volcanoes in the oceans and lines of volcanoes on
land is that they formed at:
a. divergent plate boundaries.
b. normal faults.
c. hot spots.
d. convergent plate boundaries.
e. transform faults
C
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Magma that might have cooled slowly to produce a diorite is instead erupted at Earth's surface. It would chill rapidly and produce a(n) ________
A) rhyolite B) andesite C) basalt D) granite
The nonpoisonous ____ butterfly gains protection by looking like the bad-tasting ____ butterfly, which is a protective device known as ____.
A. monarch; viceroy; camouflage B. monarch; zebra swallowtail; camouflage C. viceroy; zebra swallowtail; mimicry D. viceroy; monarch; mimicry E. viceroy; monarch; camouflage
The ________ of a metal is a measure of its concentration necessary for profitable mining
Fill in the blank(s) with correct word
Which Russian physiographic region is flat, contains extensive wetlands, and tens of thousands of small lakes?
A. Urals B. Central Siberian Plateau C. Russian Plain D. West Siberian Plain