求一篇有关let's protect and save water的作文

Water is very important for living things. Without water there can be no life on earth. All animals and plants need water. Man also needs water.
Water is found atmosteverywhere. Even in the driest part of the world there is some water in the air.
As we all have found out, water may be a solid, or a liquid or a gas.When it isa solid, it may be as hard as brick, When itis a liquid, you can pour it out of a container. When it is a gas, you cannot see or feel it.
Although about 70 percent of the earth's surface is covered with water,there are many places in the world still running out of water. So we should make good use of water on earth
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关于环境保护（水资源节约）的话题
Our environment is very important for our lives .We need the fresh air,the clean water and so on .In the past,there were many trees around us ,the air was fresh and the river was clean.But now,people cut down many trees.Air pollution and water polloution are very serious .The environment around us becomes very terrible .We should protect our environment.First,we should plant many trees to keep water.Second ,we can ride a bike or walk to the school and work..Third ,we shouldn’t throw the dirty water into the river .Fourth,we shouldn’t use the plastic bags.Finally,we can ask more people to join us.