1.  Worst of all is the pollution that makes fresh water can't be used.

2.  In another side , the pollution makes fresh water that we can use safely less.

3.  to make fresh water from sea water is so expensive that many countries can't do it.

4.  And pullution makes fresh water into harmful water.

5.  What's more, water pollution makes much water unfit to use any more.

6.  Try hard and find a good way to make fresh water from the sea.

7.  But fresh water is limited, and there also lies the pollution of fresh water, so those make fresh water to be much shorter.

8.  These factors make fresh water less.

9.  Pollution make fresh water to useless water.

10.  It makes the water not to be drinked .