Protection of the Environment Once man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be unlimited. Today things are different. The world has become too crowded. We are using up our natural resources,and polluting our environment with dangerous chemicals. If we continue to do this, human life on earth will not survive. We realize that if too many fish are taken from the sea, there will soon be none left. Yet,with modern fishing methods, more and more fish are caught.We know that if too many trees are cut down, forests will disappear. Yet, we continue to use powerful machines to cut down more and more trees. We see that if rivers are polluted with waste products, we will die. Yet, waste products are still put into rivers. We know that if the population continues to rise at the present rate, in a few years, there won’t be enough food.What can we do to solve these problems? If we eat more vegetables and less meat, there will be more food available. Land for crops feeds five times more people than land where animals are kept. Our natural resources will last longer if we learn to recycie them. The world population will not rise so quickly if people use modern methods of birth control. Finally, if we educate people to think about the problems we shall have a better and cleaner planet in the future. 保护环境 过去,人们不必担心保护环境的问题. 因为那时地球上人口稀少,自然资源似乎取之不尽. 如今,一切都改变了.世界变得拥挤异常.我们正在耗尽我们的自然资源,有毒化学制品的使用也正污染着环境.如果我们继续这样下去,地球上的生命将不复存在. 我们都知道如果从海里捕捉太多的鱼,海里就不会再有鱼了.但是,现代化的捕鱼技术使得捕鱼量越来越大.我们都知道如果砍伐太多的树木,森林就会消失.但是,我们仍旧使用强大的机械砍伐越来越多的树木.我们都知道如果河水被废弃物污染的话,我们只有死路一条.但是废弃物仍然源源不断地进入河里 我们知道,人口继续照现在这个速度增长的话,不出几年,就会发生食物短缺.我们该如何解决这些问题呢? 如果我们多吃蔬菜,少吃肉类的话,我们就会有更多的食物.因为同样大小的土地如果种庄稼的话会比养殖动物多养活五倍多的人. 如果我们学会再利用的话,自然资源就能持续更久. 如果人们使用现代化的生育控制方法,世界人口就不会增长如此迅猛. 最后,如果我们能够教育人们都意识到这些问题的话,未来我们就会有一个更好、更洁净的星球.
最新问答: 请问AO史密斯ESS-40C(150升)的电热水器效果如何啊?我看只有2000W,是不是烧水的时间要很长啊? 母亲给出的答案给你什么启示 什么是拟不变测定论?,宇宙膨胀系数是多少?哈勃常数是多少? 若物体做曲线运动,能否作匀速运动,请说明原因 第三部分:阅读理解(共20题;每小题2分,共40分)阅读下列短文,从每题中所给的A、B、C、D四个选项中,选出最佳选项。 在浓度(H+)相同的情况下,H2SO4 HCL HNO3 三者酸性谁强谁弱? 液化形成的天气有哪些 关于机械波的说法正确的是________(选对一个给3分,选对两个给4分,选对3个给6分。有选错的或不选的得零分) A. I would appreciate__much if you could write to me as soon as My Spring Festival……作文 用非谓语动词改写这个句子be careful when you cross the street 在三角形ABC中,最大角是最小角的2倍,则最小角的取值范围是多少 让我来照样子填一填.(抬)头;(皱)眉.( )腹;( )眼;( )嘴;( )耳;( )胸;( )手; 有块正方体木料它的棱长是4DM把这块木料加工成1个最大的圆锥,这个圆锥体积是多少 木旺得金方成栋梁是什么意思 影响蜡烛燃烧时间的因素-蜡烛的质地 the top covering of the earth in which plants grow 如何翻译 从点B(-2.1)发出的光线经X轴上点A反射,反射线所在的直线与圆X^2+Y^2=1/2相切,求点A的坐标? 小英从一楼走到三楼用了 5 4 分,如果用同样的速度再从三楼走到六楼,要用 15 8 分.( ) A.正确 B.错误 若一个绕着圆轨道做匀速圆周运动的小球当运动到圆的最顶点时,这时候处于临界条件,为什么一般题目解答都是mg=m*(v^2/