Basalt is an igneous rock which forms from lava which cools on the surface of the Earth.
(Basalt; is; an igneous rock which forms from lava) (an igneous rock; forms; ) (lava; cools; L:on the surface of the Earth)
Basalt an igneous rock lava
is forms cools
an igneous rock which forms from lava
L:on the surface of the Earth