Pumice Pumice is a very light, porous igneous rock that is formed during volcanic eruptions.
(Pumice Pumice; is; a very light, porous igneous rock that is formed during volcanic eruptions) (a very light, porous igneous rock; is formed; T:during volcanic eruptions)
Pumice Pumice a very light, porous igneous rock
is is formed
a very light, porous igneous rock that is formed during volcanic eruptions
T:during volcanic eruptions