About
seventy
____________________
(
70%
)
of
the
earth's
surface
is
covered
with
____________________
.
But
98%
of
this
water
is
salt
water
and
thus
____________________
.
Out
of
the
2%
left
,
one
percent
is
frozen
in
____________________
and
the
other
1%
is
threatened
by
____________________
.
We
can
also
obtain
fresh
water
by
the
process
of
____________________
i
.
e
.
a
process
to
convert
salt
water
to
fresh
water
whereby
salt
and
____________________
are
removed
from
the
water
.
Unfortunately
,
desalination
is
an
____________________
process
using
large
amounts
of
energy
,
but
research
is
currently
being
carried
out
into
the
development
of
more
efficient
technology
using
a
combination
of
different
methods
.
Desalination
has
traditionally
been
carried
out
by
____________________
the
water
(
the
thermal
method
)
.
The
main
disadvantage
of
this
method
has
been
the
cost
.
Consequently
,
a
cheaper
and
more
flexible
method
has
been
developed
,
whereby
____________________
water
is
purified
by
passing
it
through
membranes
.
This
method
is
used
most
effectively
in
combination
with
the
thermal
method
.
The
water
____________________
is
not
a
problem
unique
to
dry
countries
.
In
countries
with
relatively
high
rainfall
,
water
____________________
can
still
occur
because
of
leakages
and
the
subsequent
loss
of
billions
of
litres
of
water
.
In
addition
,
the
average
daily
consumption
of
water
has
risen
to
as
much
as
150
litres
per
person
in
recent
years
,
due
to
the
increased
use
of
modern
technology
in
our
homes
.
To
overcome
these
problems
,
the
public
are
____________________
to
limit
their
____________________
of
water
.
Islam
is
a
religion
that
encourages
water
____________________
.
The
religion
teaches
that
water
should
be
respected
.
One
of
the
most
famous
verses
pertaining
to
water
is
taken
from
the
chapter
of
"
the
Prophets
"
and
it
states
?
We
made
from
water
every
living
thing
?
(
21
:
30
)
.
The
Quran
mentions
that
we
should
not
waste
our
____________________
resources
:
?
O
Children
of
Adam
?
Eat
and
drink
:
But
waste
not
by
excess
,
for
God
loveth
not
the
wasters
.
?
Furthermore
,
Prophet
Muhammad
peace
be
upon
him
said
"
?
Do
not
waste
water
even
if
performing
ablution
on
the
bank
of
a
fast
-
flowing
,
large
river
.
?
The
Islamic
system
says
that
whether
water
is
available
in
plenty
or
in
mere
drops
,
conservation
of
water
is
to
be
the
maxim
all
the
time
.
Hence
,
this
precious
and
scarce
____________________
must
be
managed
with
respect
and
the
highest
degree
of
responsibility
.
