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fissure

a long narrow depression in a surface

volcano

a cone-shaped hill or mountain around this opening, built up of the material that is forced out.

pyroclastic material

The volcanic rock ejected during an eruption, including ash, bombs, and blocks

hot spot

an area where magma from deep within the mantle melts through the crust above it

Cooler temperature

What is the effect of after a volcano erpution

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