As far as I know,river pollution exist so many places in our country.A great deal of dead fish can be found floating on the surface of the river because of the serious pollution.Besides river pollution,there are also air pollution,soil pollution and so on.They have done great harm to human lives.Fortunately,more and more people have come to realize how serious the problem is.The government has begun to take measures to fight against pollution.But there is still a long way to go.We should take care of our earth and try our best to win the buttle against pollutin.