文档介绍：生态环境概论英语论文
People around the world may feel that the climate has been getting steadily warmer and warmer in recent 情，有一些人认为，证据表明即使没有人类的影响我们也将进入另一个冰河时代。但令人关注的是地球上的温室气体增加如此之快，已经严重威胁到了地球上的生物。人类活动导致全球变暖的问题,如森林砍伐,这意味着减少二氧化碳转化为氧气,燃烧化石燃料导致海平面上升,南极大陆的融化的雪和冰的温度。意味着海平面上升可以用来减少将冰融化的土地面积,意味着释放任何有害物质,也可能导致进一步的海平面上升。温度升高的细菌和病毒还将提供一个良好的发育条件,从而导致更多的疾病。另外，无论我们走到哪里，到处可见随意丢弃的垃圾。事实上，污染正威胁我们的生存。
Now in some places of our country，a number of people have been cutting down the trees in the forests because they need wood and more farmland. The areas of forests are getting smaller and smaller. Some scientists say that there will be no vast forests in 20 or 30 years. It is really a terrible thing. Where the forests disappear，dust storms will occur occasionally. The weather will get hot and dry. The whole earth will become a big desert. A lot of plants and animals will will not grow anywhere. Life will be difficult for everyone. The human beings will be punished for their forest-destroying activities.
Therefore，we should realize the importance of taking care of our forests. We should do our best to protect our living environment and keep our mountains
green，the water clean，and the sky blue.
在我国的一些地区，由于需要木材和得到更多的耕地，许多人一直在砍伐森林中的树木，森林面积正变得越来越小。一些科学家预言二三十年后将不会再有大片的森林，这真的是一件可怕的事情。森林在哪里消失，沙尘暴就在哪里发生，天气会变得炎热而干燥，整个地球会变成一个大沙漠，大量的动植物会消失，没有地方再长庄稼，生活会变得很艰难，人类因为破坏森林的活动将受