关于环境污染的英语作文简单优秀20篇

The ocean and we are a whole, first of all, the ocean itself has great handling of pollutants, dilution, diffusion, oxidation, reduction and degradation of purification ability. But the capacity is not unlimited, when toxic and harmful substances accepted by the local waters more than its own self-purification ability, it will cause pollution of the waters. In addition the ocean while contains many resources, but the regeneration of marine resources is the need of time, if the development of marine resources we uncontrolled and not pay attention to the protection of these resources, so there is always used in the light of day. So the protection of the marine is extremely important.

我在看了《十万个为什么》中太阳会有耀斑之后，做了一个这样的梦……

在飞船上的2040年，我已经成为了飞船有名的科学家了。要解决现在飞船上最严峻的问题——环境污染。

在2030年时，养育世间万物的太阳居然爆炸了，吞噬了地球。我们造好了飞船上的最后一个零件，飞出了地球。日复一日，年复一年，我们不断修复飞船，但因为当时走得匆忙，只带了一些菜子和猪肉。除了造飞船时种下的草，就只剩一棵树了。

十年过去了，草基本都死了，整个飞船进入了严重污染期：垃圾没地方分解，吸收；废水也不能被自然净化；氧气也越来越少……

在这时，我提取了草，树，菜，猪的基因，合成了一种叫“草树菜猪”的东西。这种东西可种植，长出来后是树一样高的草。煮熟后，是一种有菜的颜色和营养，有猪的香味和口感的食物。未煮熟的时候十分坚硬，可以造房子。也可以像草一样给人们提供氧气。

那么大一个飞船一棵“草树菜猪”怎么够呢？我用克隆机克隆了成千上万的“草树菜猪”，种植到飞船的每一个角落。

经过不懈努力，终于，污染危机解除了。

虽然这只是一个梦，但是我们如果还不加节制的污染，浪费，这会不会变成真的呢？

我们从现在开始保护我们的地球妈妈吧！

Because the Spring Festival is the most popular traditional festival in China. In the lunar calendar is at the beginning of the month, also known as the lunar new year, known as "new year" new year "". Every year, the streets are full of red red lanterns and flags fluttering. The mall is the huge crowds of people, buy special purchases for the Spring Festival can be lively. Grandma preparing food, there are a lot of "bang, bang, bang" outside the  whip. Each child was dressed in a beautiful new dress, and the big people showed a satisfactory smile. My father bought me a lot to the Spring Festival fireworks and firecrackers, in the evening, I took out the fireworks down the stairs and children together, we play very happy, to the beginning of the evening, I was unable to part with his family home, eating fruit while watching the evening, wonderful performances makes us laugh I thought: if every day new year, the good ah! I also like the "Chongyang Festival".

An unforgettable 200 word composition for the Spring Festival

Environmental protection, the subject, is a household name, everyone knows. But in real life, some people still dont too seriously, think small, in my opinion, environmental protection should start from the pretty little things. I have experienced such two things: one day, I go to the supermarket to buy things, quickly to the door of the supermarket, see several send out flyers, see to, see cars, but some people dont, casually throw on the ground, I used the paper in the trash. Saw the two men, the propaganda time with glue on the wall, from a distance, like pieces of "psoriasis" while they do not pay attention to, and I took out my skills "tearing work", ha ha, I get rid of a large "psoriasis" is. At another time, I play in the bottom of a floor, find the distance on the grass up whereas white smoke, a closer look, it turns out that there is a group of children in our class burning grass, grass black a large, I hurriedly stop as a big brother, and about the dangers of fire and the importance of environmental protection. They are ashamed, quickly the coming water from the nearby end extinguish fire, finished burning grass action.

We human beings are living on a planet, that is the earth. On earth, have for the oxygen we breathe, there are dense forests, vast grasslands, boundless sea, all kinds of animals, constitute the beauty of nature.

I think loudly called on the people: the earth belongs to our human, belongs to all of us, as long as with our hands, starts from me, starts from everyone, protect the environment, the love of the earths natural resources, make clear pond water still flowed in the home, flowers in full bloom the flowers still.

Human ah, should be time to wake up, open your eyes and look around us, this is our home, let us from now on, wash his with their own hands, with their own wisdom, with their own conscience, for our children and grandchildren keep a harmonious and beautiful homeland, let us make an efforts to us from generation to generation for survival!

环境保护，这个话题，可以说是家喻户晓，人人皆知。但在现实生活中，一些人还是不太重视，认为微不足道，在我看来，环保要从件件小事做起。我就经历过这样两件小事：有一天，我去超市买东西，快到超市门口时，看见有几个散发宣传单的，见人就给，见车就放，可是有些人却不要，随手就扔地上，我过去将纸扔进垃圾箱里。又看见两个人用胶水将宣传单贴在墙上，远远望去，活像一块块“牛皮癣”趁他们不注意，我又拿出我的绝活“撕纸功”，哈哈，“牛皮癣”被我除掉了一大片。还有一次，我在楼底玩，发现远处草地上冒出了缕缕白烟，走近一看，原来，是我们班一群小孩在那里点火烧草，草黑了一大片，我以大哥哥的身份连忙制止，并讲了火灾的危险性和环保的重要性。他们羞愧难当，赶忙从附近端来水把火熄灭，结束了烧草行动。

我们人类都生活在一个星球上，那就是地球。地球上，有供我们呼吸的氧气，还有茂密的森林、辽阔的草原、无边无际的海洋、各种各样的动物，构成了美丽的大自然。

我想大声呼吁人们：地球属于我们人类，属于我们大家，只要用我们的双手，从我做起，从人人做起，保护环境，爱护地球上的自然资源，让清澈的塘水依旧流淌在家乡，让花儿依旧那样鲜花盛开。

人类啊，是应该觉醒的时候了，睁开眼，看看我们的周围，这是我们的家园啊，让我们从此金盆洗手，用自己的双手，用自己的智慧，用自己的良心，为我们的子子孙孙留下一个和谐、美丽的家园吧，让我们为我们世世代代的绵延生存做出一份努力吧!

What I expect for city life is not just about drink bars, shopping mall, entertainment center etc, although they are indeed better than the facility in the rural areas. What I expect for city life is a clearer environment, not only in the surroundings but also in peoples spirit. I hope the people around me are all good mannered with politeness and courtesy, there is no quarrel, no battle, people treat each other with respect. I hope there would be no traffic jam as in Beijing our country capital today where traffic jam happened everyday, which make the citizens feel depressed and great pressure.

What Can We Do for the Environment

Hello,everyone. Im Li Hua. Its nice to speak about what we can do for the environment,and I think each of us can do a little bit to help with this problem.

The first thing we can do is to use cloth bags in stead of plastic bags when we go shopping. It helps to protect the environment. The second thing we can do is to reuse the old textbooks as possible as we can. We should also never forget to turn off the lights when we leave the classrooms in order to save energy. Whats more, it would be better if we walk or ride a bike to school. We should try our best reduce pollution and waste.

In fact,even the simplest everyday activities can make a real difference to the environment. I believe we can make the world a better place to live in.

Thank you for your listening!

我们能为环境做些什么

你好，每个人都。我是李华。很高兴谈论我们能为环境做些什么，我想我们每个人都可以做一点点来帮助解决这个问题。

我们能做的第一件事就是在用布袋代替塑料袋，当我们去购物。它有助于保护环境。我们能做的第二件事是尽可能重复使用旧课本可以。我们也应该永远不会忘记关灯，当我们离开教室时，为了节省能源。更重要的是，它会更好，如果我们步行或骑自行车上学。我们应该尽最大努力减少污染和浪费。

事实上，即使是最简单的日常活动也能对环境产生很大的差异。我相信我们可以让世界变得更美好的生活。

谢谢你的倾听!

随着科技的不断发展，汽车的不断增多，排放的废气已经造成了严重的污染，或许，几年后的子孙后代、几百年后的大家，或许会因为大气污染而死亡。现在，地球上每一年都有百分之二十的人因为饮用了受到污染的水而死亡，如果这样延续下去，地球在几万年后岂不是变得光秃秃、像月球一样了?

据科学家的统计，每一年，每一月都有百分之二十多的树木因为废气污染而枯萎。百分之八十多对我们有益的细菌死亡，大家或许会觉得很夸张，但这是事实。其次还有受到污染的废水、废气等。人类有错吗?

我多么希望大家能珍惜我们身边的每一个事物，每一只动物，每一只有益的细菌，因为，很有可能，在几万年后的今天，他们都没有了。

动物对人类发起了警告;

细菌对人类发起了警告;

每一条无辜的生命对我们发起了警告。

“人类，不要再害你自己，不要再害死我们了吧!”

I went to the gate of the primary school in shangjia city, and I was like walking into my other home, where I studied, lived, grew up, and my school was my home.

Lush trees, clean corridors, white walls. However, there are a few students on our campus who break the beautiful environment at will. The campus stairs and the various food packaging bags in the hallway, the various drink bottles of the flowers, the prunes in the classroom, the melon seed shells... The environment that makes us beautiful is destroyed, and it feels like a blank sheet of white paper. Taking care of the campus environment is the duty and responsibility of each of us.

So what can we do to make our campus environment civilized?

To set up the campus is the idea of home, the campus is my home, everyone loves it. Students should love the campus as much as they love their new clothes.

On the campus, the behavior should be standardized, from the little things, from a little bit, the daily behavior standard is every day, every time, everywhere.

We will comply with the regulations of the elementary school childrens daily behavior and strictly observe the institutions of the school. Be a good boy at home, be a good student at school, and be a civilized citizen in society.

4, do not break the environment of the school carelessly, should not throw waste to the ground; You shouldnt leave a mark or a handprint on a white wall. Consciously pick up every piece of paper or food bag on the floor; Stop unethical behavior.

To correct bad behavior, we cant just rely on our teachers and consciousness. Use concrete actions to protect and protect our campus environment. Start by myself, start by yourself, start every day, protect the campus environment.

My family only there peoples, there are my father, my mother and me.

I’m fourteen year old. I’m very active, so I like playing with my friend, and I like playing computer.

My father is driver. He is strong and tall, but he looks very funny. He likes watch newspaper very mach.

My mother works at a factory. She is beautiful and tall too. She likes sports ,so she is very thin .

This is my family. Do you like my family? I like it very mach.

how to solve the energy shortage（如何解决能源短缺问题）

energy shortage is a very serious problem in the world. many people worry that energy resources on the earth will be exhausted if we use them in an unchecked way. this, most people agree, will cause serious problems and even crisis and jeopardize the survival of mankind .

on the one hand, most people agree that the problem can be solved in one way or another. one is to conserve and save our energy. energy refers not only to coal, oil, or natural gases but also to goods, land and water, etc. most countries have realized the wastefulness in their using of energy. they are trying to conserve energy. for example, some countries have a daylight saving system to use less electricity for lighting. some cities have enforced water savers at public such as restrooms and bars. some have enforced serious penalties on overuse of electricity, water, and farming land. by these means, people hope the drain on energy resources could be slowed down.

however, conservation alone cannot solve the problem. another way, perhaps the best i think,, is to develop new energy resources. obviously, no matter how hard we try to save energy resources and how abundant they are, we will use them up sooner or later. i think there are many energy resources that we can develop and utilize. we don’t have to depend only on the current conventional energy resources. there are many other energy resources that we can develop such as nuclear power, waterpower and solar power. these resources, if developed, can completely replace the conventional energy and thus solve the problem of energy shortage.

[环境问题四级英语作文

环境污染也使人类自食了苦果，让我们回顾一下历史，看看前人是怎样受到自然的惩罚的，这就是世界著名的八大公害事件：

1、比利时马斯河谷事件：1930年12月，比利时马斯河谷工业区，排放的工业有害气体和粉尘对人体造成重大影响，一周内近60人死亡，市民中得心脏病、肺病死亡率增高，家畜死亡率也大大增高。

2、美国洛杉矶烟雾事件：20世纪40年代美国洛杉矶的大量汽车废气在紫外线的照射下产生光化学烟雾，造成许多人的眼睛红肿、咽炎、呼吸道疾病恶化及思维紊乱。

3、美国多诺拉事件：1984年10月，美国宾夕法尼亚州多诺拉镇的二氧化硫及其氧化物，与大气粉尘结合，使大气严重污染，5911造成人暴病。

4、英国伦敦烟雾事件：1952年12月，英国伦敦由于冬季燃煤引起的煤烟性烟雾，导致4天时间内4000多人死亡，两个月后又有8000多人死亡。

5、日本水俣病事件：1953年至1968年，日本熊本县水俣湾，由于人们食用了含汞污水污染的海湾中的鱼虾，造成近万人中枢神经疾病，其中甲基汞中毒患者283人中有60余人死亡。

6、日本四日市废气事件：1961年，日本四日市由于石油冶炼和工业燃油产生的废气，严重污染大气，引起居民呼吸道疾病骤增，尤其是哮喘病的发病率大大提高，形成了一种突出的环境问题。

7、日本富山的痛痛病事件：1955年至1977年，生活在日本富山的人们，因为饮用了含镉的河水和食用了含镉的大米，以及其他含镉的食物引起痛痛病，就诊患者258人，其中死亡者达207人。

8、日本的爱知粮油事件：1963年3月，在日本的爱知县一带，由于对生产米糠油的管理不善，造成多氯联苯污染物混入米糠油，人们食用了这种被污染的油之后，造成13000多人中毒，数十万只鸡死亡的严重污染事件。

with the improvement of our living standard, more and more people can afford a car. as a result, our roads are more often than not crammed with cars. however, with more and more waste gas being discharged by the cars, the problem of air pollution becomes even more serious. so nowadays we advocate to lead a low-carbon life.

my suggestion is we should ride bikes more often instead of driving cars.by riding a bike, we can not only exercise our body but also protect our environment. why not have a try, my dear friends?

与我们的生活水平的提高,越来越多的人都买得起汽车的.因此,道路往往没有堆满了汽车.然而,随着越来越多的废气排放是汽车、空气污染问题变得更加严重.所以现在我们提倡过低碳的生活.

我的建议是我们应该更经常骑自行车而不是开车骑一辆自行车,我们不仅能锻炼身体,也能保护我们的环境.为什么不试试,我亲爱的朋友?

Recently we have held a class meeting to discuss what is considered to be honorable behavior and what is shameful.It is really a pity to see all this in our school.Some students don’t respect their teachers or parents. Some don’t take their studies seriously and cheat in exams. Some throw wastes everywhere and pollute the environment . It is honorable to obey the law and rules , care much about our class and study hard.It is shameful to break school rules, to be selfish or to make little effort to achieve success.We should respect others and think more of them than of ourselves.We should work hard and make much more progress to repay the society.We should try our best to keep the environment clean。

导语：现如今我们的生活中有太多的汽车，除了拥挤，事故和快速的燃料消耗，汽车是造成大城市空气污染的主要原因。下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

Too many cars have created a lot of serious problems in our world. Besides congestion, accidents and fast fuel consumption,cars are responsible for a good part of air pollution in big cities. All the time, they are pumping huge amounts of waste gases into the atmosphere. These gases are very harmful, causing disease and even death. Last winter, car fumes formed heavy smog over Beijing, making the sky gloomy for weeks and deteriorating peoples health.

One possible solution is to design and develop clean cars and clean fuels. In Tsinghua University, campus buses are driven by electricity. In Beijing some of the public buses begin to run on natural gas, which does not give off as much carbon dioxide as the petrol. But it may take decades for the new models of clean cars to completely replace the traditional ones.

Another solution is to develop modern public transportation systems and restrict the use of private cars. If the price of petrol rises constantly and the public vehicles are efficient and convenient enough, most people will not private cars. And the total number of cars in big cities will reduce greatly.

On the whole, the elimination of air pollution needs the co-efforts from the government, the public and the environments. This problem will be solved only with the help of science and technology.

【参考译文】

太多的汽车在我们的世界里制造了许多严重的问题。除了拥挤，事故和快速的燃料消耗，汽车是造成大城市空气污染的主要原因。他们一直在向大气中排放大量的废气。这些气体是非常有害的，导致疾病甚至死亡。去年冬天，汽车烟雾在北京上空形成了浓重的烟雾，使天空阴沉了数周，恶化了人们的健康状况。

一种可能的解决方案是设计和开发清洁汽车和清洁燃料。在清华大学，校园巴士是由电力驱动的。在北京，一些公共巴士开始使用天然气，这并没有像汽油那样排放二氧化碳。但清洁汽车的新模式可能需要几十年才能完全取代传统汽车。

另一个解决办法是发展现代公共交通系统，限制私家车的使用。如果汽油价格不断上涨，公共交通工具的效率和足够的方便，大多数人不会私家车。大城市的汽车总数将大大减少。

总的来说，消除空气污染需要政府、公众和环境的共同努力。这个问题只有在科学技术的帮助下才能得到解决。

A RAVEN saw a Swan and desired to secure for himself the same beautiful plumage. Supposing that the Swans splendid white color arose from his washing in the water in which he swam, the Raven left the altars in the neighborhood where he picked up his living, and took up residence in the lakes and pools. But cleansing his feathers as often as he would, he could not change their color, while through want of food he perished.

Change of habit cannot alter Nature.

cars have created a lot of serious problems in our world. all the time, they are pumping huge amounts of waste gases into the atmosphere, causing disease and even death.

one possible solution is to design and develop clean cars and clean fuels. but it may take decades for the new models to completely replace the traditional ones.

another solution is to develop modern public transportation systems and restrict the use of private cars. if the price of petrol rises constantly and the public vehicles are efficient and convenient enough, most people will not drive private cars. on the whole, the elimination of air pollution needs the co-efforts from the government and the public. this problem will be solved only with the help of science and technology.

We should take good care of the environment, protect the nature.

The earth is the only place we live, is our home. We cant because at that time the interests and her dishes in our hands. Now the earth is in danger, forest fewer and fewer birds, beautiful natural environment is missing, Bridges oxygen to feed the fish in the river without artificial is about to turn over the pool. Now more dust storms, epidemic, fatigue life of people ended almost disappeared, all kinds of cancer eating away at the us one after another of the earths people.

Back to the old people say the water bridge the somebody else, charactizing a fine spring day, how nice. Now you are "small garden path alone wandering" thats impossible.

Have seen such a report: the Japanese popular a kind of "pain pain disease", no root, for passive house got the disease will be walked into the underworld. At that time, Japan was the panic in the medical community, chasing the SuoYuan, chase ever discover Japanese like to eat fish, the fish love to eat garbage pollution, garbage pollution is Japanese poured into Japan into the sea. From this story, we dont speak Japanese, but should get some enlightenment, the deterioration of environment is referred to in a long-term accumulation, is also caused by everyone involved. Blessing is everyone to leave, a curse is everyone leave, this isnt a person. So take good care of the environment, everyone duty, protect the natural, leave the offspring.

Now I am going to call for everybody, we each member of the earths, let us act now! Good care environment, protect the natural, leave f offspring!

我们要爱护环境，保护大自然。

地球是我们人类唯一赖以生存的地方，是我们的家园。我们不能因为一时利益而将她断送在我们手中。现在的地球危在旦夕，森林少了，小鸟少了，美丽的小桥流水的自然环境不见了，河里喂鱼没有不人工供氧就要翻池了。现在沙尘暴多了，流行病多了，劳累一生的人们颐养天年的几乎不见了，各类的癌症蚕食着我们一个又一个的地球人。

回想老人们说的小桥流水人家、鸟语花香天下，是何等的惬意。现在你要“小园香径独徘徊”那也是不可能了。

曾见到这样一个报道：日本流行了一种“痛痛病”，查无根，找无源，得了该病就要走进阎罗殿。当时日本医学界真是着了慌，追本索源，追到底发现是日本人爱吃鱼，日本鱼爱吃污染垃圾，污染垃圾是日本人倒进日本进海里的。从这个故事中，我们不说日本人该死，而应得到一点儿启示，环境的恶化是人们长期积累所指的，也是人人参与所致的。福是大家留的，祸也是大家留的，这不是一个人的事。所以爱护环境，人人有责，保护自然，留福后代。

现在我要呼吁大家，我们地球上的每一个成员，愿我们立即行动起来吧!爱护环境，保护自然，留福后代!

The quality of human life has improved greatly over the past few centuries, but Earth is being harmed more and more by human activity. As we develop our technology, we demand more from our planet. Eventually, this will harm people as well.

Our planet gives us everything we need, but natural resources are not endless. Strip mining devastates whole regions, leaving bare and useless ground. Deforestation removes old growth trees that cant be replaced. Too much fishing may harm fish populations to the point where they cant recover. We are too careless in taking what we want without giving anything back.

There are more people than ever, living longer that ever. So is it any surprise that many areas suffer from too much development? Anyone living in or near a city has experienced "urban sprawl". There is a new shopping area on every corner and new houses, townhouses and apartments everywhere. Traffic gets worse and worse because planners cant keep up with growth. Keeping up with human demand is hard enough. Environmental concerns come in last.

With growth comes pollution. Companies and communities dump waste into water. Landfills are full of trash. Emissions from factories pollute the air. Barrels of industrial waste and worse, radioactive waste, have no safe place to go. If were not careful, we can harm our planet beyond repair.

People need to respect the Earth and try to preserve it. If we dont, what kind of future will we have?

Today, I suddenly flashed a thought from the mind is: to protect the environment, protect the nature.

You see, on the other side of the grass in the cry, you listen to, this way of floret cry on, you see, on the other side of the tree disappeared, leaving an empty tree stump. This is because our human deforestation, plants and animals are living in horrified, we should protect the ecological balance, afforestation. Green action in our midst!

Today, I give some watered trees in our community, drink water the young trees, in the sweet smile, you listen to, young trees n oise, n oise singing, thank us!

Then ShaJunNing and I made several sign, reading: "dont. FeiZhiXie GuaGuoPi, just throw trash can, for you laugh, to let him eat satisfied. The grass to also want to sleep, disturb the grass can be bad."

We just wanted to do, have a grandmother to see, where grandma also looked at carefully.

今天，我突然从脑海闪一个念头就是：保护环境，保护大自然。

你看，那边的小草在哭泣，你听，这边的小花在哭诉着，你看，那边的大树不见了，只剩下一个空树桩。这都是因为我们人类乱砍滥伐，动植物们都过着胆战心惊的生活，我们应该保护生态平衡，植树造林。绿色行动就在我们身边呀!

今天，我给我们小区里的小树浇了一些水，小树喝着水，在甜甜的微笑，你听，小树沙沙沙，沙沙沙的在唱歌，感谢我们呢!

然后我和沙俊宁又做了几个标牌，上面写着：“废纸屑，瓜果皮，随手乱丢可不要。垃圾桶;对你笑，赶快让他吃个饱。小草也要睡大觉，惊动小草可不好。”

我们刚要做好，有一个老奶奶就看见了，在那里，老奶奶还仔细看了一下。

The sun summoned the planet in the solar system to open an emergency meeting, the theme is to save the planet. The sun to see everyone to the Qi, and clear the clear voice, said: "The stars, our good sister earth has been at stake, the doctor said that her blood is toxins, the body of nutrients is also depleted, in this way "The moon says," In recent years, mankind has mined a lot of oil, minerals, wood and other materials, without protecting the environment, and the earths sister is not sick. "Saturn says" Way, we save the earth together! "" Well! "The stars have promised.

After the stars go back, have heard of human beings looking for a second home, so have made an appointment, never the second home of mankind, have also thrown away the conditions may be human use. For example: the moon threw away the oxygen, Saturn threw away the appropriate temperature, Mercury thrown away ... ... Finally, the human consciousness that the earth is the only human home, carried out to protect the Earth action.

300 years later, the sun also held a meeting, the earth also participated, she looks beautiful, green skin, clean blood, more importantly, she becomes healthy, the moon said: "sister, see you now So happy, I am happy for you. "Mercury said," Sister, see you now so beautiful, I am a little jealous. "Earth said:" Thank you all for my sacrifice so much, I am now healthy, or Thank you all, thank you, "said the sun," the stars, after this action, humans have recognized the importance of the earth, and I declare that the rescue of the earth is a success.

Friends, the mother of the mothers disease though good, but also need to continue convalescence, and now, let us work together to the earth dressed as the most beautiful planet in the universe.

保护环境英语作文篇3

There are many diseases that are harmful to human health and even threaten human life. Human into the 21st century, the world has occurred in the number of amazing changes. In the people for the rapid development of science and technology, but also experienced a better anxiety and even disaster. In addition to the panic of the development of high-tech, especially biotechnology, war and disease seem to bring mankind directly to the door of hell.

Water pollution on the human body harm, the body in the process of metabolism, with drinking water and food, the water of various elements through the digestive tract into the various parts of the body. When the lack of water in some of the human life process necessary elements, will affect human health. For example, in some areas of water iodine deficiency, long-term consumption of this water, it will lead to "big neck disease", is the medicine called "endemic goiter." When the water contains harmful substances, the greater harm to the human body. Carcinogenic substances can be consumed by eating contaminated food (food, vegetables, fish, etc.), into the human body, but also through the water into the human body. According to the survey, drinking contaminated water, suffering from liver cancer and gastric cancer and other cancer incidence, than drinking clean water is about 61,5% higher. When the sewage contains mercury, cadmium and other elements into rivers and lakes, the aquatic plants put mercury, cadmium and other elements to absorb and enrich them, fish eat aquatic plants, and in its body to further enrichment, people eat poisonous Fish, mercury, cadmium and other elements in the human body enrichment, so that the human body and death. In this way, from the aquatic plants → aquatic small animals → small fish → big fish → the body, forming a food chain. The body eventually became mercury, cadmium and other elements of the "foothold."

Water pollution hazards to aquatic organisms Water lives in a variety of aquatic animals and plants. Biological and water, between biological and biological complex material and energy exchange, from the number to maintain a dynamic balance. But under the influence of human activities, this balance has been destroyed. Some of the beneficial aquatic organisms are poisoned when humans release pollutants into the water, and some of the stained aquatic organisms will multiply, consume a lot of oxygen dissolved in the water, so that the beneficial aquatic life is forced to relocate due to hypoxia Or death. In particular, some toxic elements, both difficult to dissolve in water and easy accumulation in the body, causing great harm to humans. Such as mercury in the water content is very low, but the content of aquatic organisms is very high, the content in the fish is also surprisingly high. Assuming that the concentration of mercury in the water body is 1, the concentration of mercury in the aquatic organisms is about 700, and the concentration of mercury in the fish is as high as 860. Thus, when the water is contaminated, on the one hand led to biological and water, biological and biological balance between the damage, on the other hand some of the toxic substances continue to transfer and enrichment, and ultimately endanger human health and life.

The population of the earth is increasing very fast. Humans must make the earth support the increasing population. This has made it necessary for agriculture and industry to develop rapidly.

Such a rapid development produces more and more waste, which goes into the water, the soil and the air. Some of it is made harmless. However, where there is too much of it, the poisonous waste may do great harm to the things around the people.

When farmers add fertilizer to the soil to make plants grow better, or use poison to kill pests, poison is sent into the air, the water and the soil. When birds, fish and people eat the grain, drink the water or breath the air, harm will be done to their health.

The air in big cities is often made very dirty by cars and factories. Millions of tons of waste and poisonous gases are sent into the air with the smoke. In some places, little is done to make the smoke clean before it goes into the air.

Fortunately, people are beginning to realize just how serious the whole situation is. In many countries, laws have been made to stop factories from sending out poisonous gases.