The
Sun
is
the
____________________
at
the
____________________
of
the
Solar
System
.
It
is
a
nearly
perfect
sphere
of
____________________
plasma
,
with
internal
convective
motion
that
generates
a
____________________
field
via
a
dynamo
process
.
It
is
by
far
the
most
important
source
of
____________________
for
life
on
Earth
.
