No matter whether we realise it or not,water has become a necessary factorfor our lives.Studies have shown that drinking 8 cups of water everyday can help us to keep healthy.During the process of drinking water,water clean our inner system and take the waste or dirty things out of our body.Furthermore,water can be used in production of food.Since transportation of ships has become an important method of trading,the power of navy has become an important factor to show the strength of a country.The improvement of technology allows people to use water conveniently and it causes the growth of plants.Gathering of water among the clouds causes rain.Updating of natural water resource causes the change of weather.They are parts of our natural water resources circulating system.
However,the fresh water which can be drunk directly for human beings is not enough in our planet one third regions of world facing the serious problems of lacking of water.Our senior citizens have realised theimportance of water.In the regions of chinatown,peoplecarried water by using oxcart.Although the method and process was hard,they still continued this activity.This is because water is on a important position of their daily life.If water is not necessaryfor them,why they still carried on the activity?Though the seawater is rich onour planet,the pure fresh water which can be drunk directly byhuman beings only occupies 1% of seawater resources.Should we still be overconfident on the problems of water resource?
One may say that since the technology has developed,we can live without water.We are able to find other resource to replace water in some situations.They claim that they can only eat food and live without