我们的家园只有一个,但现在已经变得千疮百孔。多年以后,当人类再次置身于太空之中,也许再也看不到蓝色的、美丽的地球了,取而代之的只是一颗灰暗的、没有生气的普通球体。为了避免这一天的到来,我们必须有所行动。保护水资源。水是不可再生的资源,也是生命的源头,我们要节约水资源,从一点一滴做起,每人每天节约一点水,让地球妈妈蓝得更久一点!保护树木。树木可以净化空气,大面积地植树造林,还可以抵挡风沙。撒哈拉大沙漠为什么一片荒芜,因为偌大的地方,竟然没有一棵树!没有树也就意味着不会有 We have only one home, but it has become so riddled with problems. Years later, when humans were once again exposed to space, they might no longer see blue, beautiful earth, replaced by a gloomy, lifeless common sphere. In order to avoid this day, we must act. Protect water resources. Water is a non-renewable resource as well as a source of life. We need to save water and start from a little bit. Everyone saves a little water every day, so that Mother Earth can last longer! Protect the trees. Trees can purify the air, large areas of afforestation, but also to resist sand. Why the Sahara Desert is desolate, because there is no such thing as a tree! There is no tree which means there will be no