One
big
problem
is
water
____________________
.
There
are
many
causes
:
dumping
of
industrial
____________________
,
increase
of
____________________
and
____________________
.
In
the
same
way
,
____________________
we
use
in
agriculture
pollute
underground
water
____________________
.
On
top
of
this
,
there
are
also
accidents
with
ships
that
spill
____________________
in
the
sea
.
What
is
the
result
?
Disappearance
of
____________________
at
aquatic
ecosystems
and
____________________
for
humans
.
For
all
these
reasons
we
must
ensure
water
____________________
and
water
____________________
for
all
people
on
the
planet
.
