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Volcanic eruptions cause
lava, ash, and gas to spew from volcanoes, ruining forests, filling lakes,
and destroying cities. Simple ash if erupting in large quantities, can
create heavy rainfalls and even boiling mudflows that can move 60 miles
per hour. However, mild ash falling can provide farmers with nutrient-rich
fertilizer, and hardened lava forms rocks such as pumice that is used to
grind and polish metal. |