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Sometimes it's hard to tell if the bowl-shaped feature at the top of a volcano is a crater or a caldera. You can usually determine if it's one or the other by _____.

a. learning its size and how it formed
b . learning how much water it is filled with
c. learning what type of volcano it's on top of
d. learning if the volcano is active or extinct

2 Answers

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A caldera viscous or acidic lava plugs the vent of a volcano this leads to violent eruptions this causes the crater to be blown off the top of the volcano subsides or collapes forming a basin shaped depression.called a caldera .hope this helps
User Sreenuvasulu
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9.1k points
3 votes
i think it is D. hope this helps :]
User Bmpasini
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9.1k points
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