1
.
____________________
the
polar
ice
is
melting
,
polar
bears
have
been
forced
to
adapt
to
environmental
changes
.
2
.
The
amount
of
polar
ice
has
been
decreasing
.
____________________
,
the
polar
bear
has
lost
part
of
its
natural
environment
.
3
.
The
polar
bear
depends
on
ice
as
it
hunts
food
in
the
ocean
.
____________________
,
the
loss
of
ice
can
lead
to
starvation
.
4
.
____________________
there
is
less
ice
for
polar
bears
to
stand
on
,
swimming
has
become
more
dangerous
for
them
.
