My homework 3 in WEB :) The pollution is the most serious promblem in China.We cannot live without air and water. A news that about thirty percent of the world's people may not have enough water by the year 2025. In the northwest of China's people has not enough water to live,beacuse the natural climatic conditions is bad.The bad climatic makes food can't grow and some people even have no clean water to drink. In south of China,many factories give off polluted water and some other dirty things.We even can't see fish swimming in the river.Polluted air makes us sick and smell terrible.It's bad for our health. We have only one earth. I hope everyone will protect our environment well.