The
Ozone
Layer
is
a
'blanket'
____________________
the
earth
.
It
protects
____________________
from
the
sun's
ultraviolet
(
UV
)
rays
.
The
problem
is
that
there
is
a
hole
in
the
Ozone
layer
over
Antarctica
.
Humans
made
that
hole
____________________
people
use
some
products
____________________
have
terrible
effects
on
the
ozone
.
Scientists
say
that
this
year
____________________
hole
broke
all
records
:
it
is
the
____________________
in
history
.
It
is
27
.
4
million
km2
.
Why
is
this
hole
____________________
big
?
One
reason
is
that
the
clouds
over
the
South
Pole
carry
chlorine
(
Cl
)
and
that
gas
slowly
eliminates
the
ozone
.
Now
people
are
thinking
more
about
the
ozone
.
They
are
____________________
other
substances
and
in
some
years
,
____________________
will
remember
what
the
'ozone
hole'
was
.
