The
three
types
of
rocks
are
____________________
,
____________________
,
and
____________________
.
Igneous
rocks
are
formed
by
____________________
cooling
from
a
____________________
.
Metamorphic
rocks
are
formed
by
____________________
and
____________________
.
Sedimentary
rocks
are
formed
by
____________________
of
____________________
pressing
together
over
time
.
