Fill in the blanks to complete these sentences about rock characteristics.
a rock is an
of minerals.
the
of a rock is a result of its mineral composition.
most rocks contain more than one type of

mount st. helens in washington erupts, causing a massive avalanche and killing 57 people on this day in 1980. ash from the volcanic eruption fell as far away as minnesota. seismic activity at mount st. helens, which is 96 miles south of seattle, began on march 16.

the answer is a

explanation:

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