保护环境英语演讲稿

　　water is the source of life

　　earth looks like a big blue marble; from high above the earth and from the moon, the planet gleams and shines. the blue water in the oceans and seas of the earth makes a dramatic image.water is the source of this beauty and the source of life on earth. it is the reason people can live on this planet. water is everywhere. water is in rock deep under the ground, in natural holding areas.in a real sense, water keeps earth alive.                                                the last drop of water will be the world's human tears.