Water is very important to us. If there is no water, we will die. We can eat nothing for few days, but we must drink water every day. Besides, if there is no water, the plants will not grow, and the animals will not live. Therefore, there will no food for us. But the water has been severely polluted nowadays. Much water is not suitable for drinking. For our human beings and our planet, we must protect water. Without it, there would be no life any longer in earth.