11.  All of these make fresh water Decreased.

12.  All of the facts make fresh water less and less.

13.  Though the need of fresh water is rising, much fresh water is polluted, when factories produce their product, they put poisinous water into the river or the lake , which make fresh water polluted and then reduce it .

14.  They invented a machine that make the water clear and were equipped with a cycle system.

15.  we must to find new sourse of fresh water or make other water to fresh water, etc.

16.  To our uncomfortable , the industrial polution make the water we can use in our lifes shortage more .

17.  Also many factories haven't enough facilities to clean the waste water before pour it into the river, so some of the rivers are polluted, the water from which can't be used to make fresh water.

18.  According to scientists' saying , the main reason is temperature become warm and make water turning to vapour, going through a long distance and it will fall ..