Volcanic gases include a variety of substances given off by ...
A sudden and visible discharge of electricity produced in ...
Grass (graminoids) is an herbaceous plant with narrow ...
Popocatepetl is an active volcano, located in the states of ...
Villarrica, one of Chile's most active volcanoes erupted in ...
The underground river that flows 13,000ft below ground ...
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Terms
Blossaries
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Followers
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2
5
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