The
production
possibilties
curve
is
also
useful
as
a
reminder
that
the
true
cost
of
any
good
is
not
only
its
price
,
but
also
everything
else
in
addition
to
money
that
must
be
____________________
____________________
in
order
to
get
that
good
.
The
amount
of
a
good
that
is
given
up
when
moving
along
the
production
possibilities
curve
is
the
____________________
____________________
.
Whenever
the
opportunity
cost
of
an
additional
unit
of
a
good
doesn't
change
,
the
production
possibilties
curve
is
a
____________________
____________________
.
A
straight
-
line
production
possibilities
curve
shows
____________________
opportunity
cost
.
When
opportunity
costs
are
increasing
rather
than
constant
,
the
production
possibilities
curve
is
____________________
-
____________________
rather
than
a
straight
-
line
.
In
reality
,
opportunity
costs
are
typically
____________________
.
When
only
a
small
amount
of
a
good
is
produced
,
the
opportunity
cost
of
producing
that
good
is
relatively
____________________
because
the
economy
needs
to
use
only
those
resources
that
are
especially
well
suited
for
its
production
.
As
more
of
a
good
is
produced
,
its
opportunity
cost
typically
rises
because
well
-
suited
inputs
are
____________________
____________________
and
less
adaptable
inputs
must
be
used
instead
.