It is a long way to fight against water pollution.Much has to be done to protect our living space.
Title:Water pollution in Canada
Introduction The fresh water resources in Canada,which were thought to be limitless in the past,have been polluted.There are three main types of water pollution.
Physical water pollution ·It can be noticed obviously with garbage,old tires,pieces of paper,pop cans and bottles
1.____________ in water.
·It can be 2.____________ to look at but least harmful and easy to clean and 3.____________.
4.________
____water
pollution ·It refers to bacteria and algae that enter lakes and rivers from a variety of sources,mainly from waste water from cities and towns.
·It takes place when human beings pour so 5.____________ waste water into lakes and rivers that the affected water cannot be cleaned by 6.____________.
Chemical
water pollution ·It is caused by the dumping of poisonous chemical wastes from some 7.____________ into the lakes and rivers.
·It is also caused by pesticides used on farms,which then 8.____________ from farmers’ fields into rivers and lakes.
Conclusion Water pollution has put many people in 9.____________.Although it is a long way to fight against it,we have no 10.____________ but to do much to protect our living space.
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