关于保护老虎的英语作文【汇集20篇】

Is a source of atmospheric pollution, automobile exhaust emissions. The original day is blue sky thousands of miles, but now in some big cities, dark clouds, days groggy, and smelling the automobile exhaust, will be very uncomfortable, will also cause cancer. Car brought convenience to people, but also give a person come trouble exhaust. So I want to invent a kind of environmental protection car perfume exhaust.

This car far and general, approach can find the car without the exhaust pipe, only several honeycomb holes in the rear. People cant help but question, then the tail gas is how to deal with? What about the few at the back of the hole? The original automobile exhaust has been through in the car of a tube to trunk of a big box. The first small box of exhaust gas into the first big box, box spews disinfection powder, after disinfection of exhaust gas after a filter paper wall in the second small box, this small box also jet air disinfection, second after disinfection of exhaust gas through a filter paper wall come Chinese medicine steaming box. The box is full of Chinese traditional medicine powder, 4 walls exudes a of the heat and boil Chinese medicine Chinese traditional medicine. Three times after disinfection of exhaust gas after the thickest wall filter paper box to the perfume. Exhaust immediately into non-toxic harmless aroma, the aroma and then through the small hole at the back of the scattered outside the car, a series of disinfection purification is done.

[保护环境英文作文200字

Advice on Protecting Wild Animal

Many animals are in danger of dying out。 As is shown in the chart， we can see the number of animal species decreases faster and faster and this trend will continue。 From 1980 to 2010， at least 1 million animal species have disappeared。 Worse still， more and more wild animals are in great danger。 It is not a piece of sensational news; it is a fact， a harsh reality。 Unfortunately， we may not see these animals in the near future。

很多动物频临灭绝的危险。图表显示，我们能够看到动物物种数量下降的速度越来越快，而且这种趋势将会持续下去。从1980年到2010年，至少有100万动物物种已经消失。更糟糕的是，越来越多的野生动物处于巨大的危险中。这不是一则耸人听闻的新闻，这是一个事实，一个残酷的事实。不幸的是，将来我们可能看不到这些动物了。

From the second picture， we can find some reasons。 Why is the number of animal species declining year by year? Apparently animals have bee victims of fashion industry。 Animal skin has been used to make fashionable clothes and these clothes sell at a high price。 So some greedy people begin to kill animals in a large quantity。 This irresponsible behavior not only breaks the balance of nature but also endangers the living environment of human beings。

从第二幅图我们能够找到一些原因。为什么动物物种的数量一年年的减少呢?显然，动物成为了时尚工业的受害者。动物的皮被用来做时髦的衣服，而且这些衣服都是高价出售。因此，一些贪婪的人就开始超多屠杀动物。这种不负职责的行为不仅仅打破了自然的平衡，而且使人类居住环境陷入危险。

As far as I am concerned， something must be done to stop this illegal action。 We believe "no buying， no killing"。 First， we must make concerning laws to protect these animals in danger。 Second， we must take some measures to protect animals effectively。 Animals are our friends and part of our environment。 Third， we should raise peoples awareness to protect animals and our environment。 In this way， we can build a harmonious society and ensure a sustainable development。

在我看来，我们务必要做些什么来阻止这种违法行为。我相信“没有买，就没有杀”。首先，我们务必制定有关法律来保护这些处于危险中的动物。其次，我们务必采取一些措施有效的保护动物。动物是人类的朋友，也是我们环境的一部分。再次，我们就应提高人们保护动物和环境的意识。这样一来，我们就能够建立一个和谐的社会，确保其可持续发展。

Recently, the news reported that one special kind of rhino from Africa just

passed away, which meant the disappearance of this lovely creature. What a great

pity. The tragedy is caused by the damaged environment, while human being must

be blamed for it, because we have done so many bad things to pollute the

environment and make the nature lose its balance. In order to make up our faults

and save our offspring, it is in need of protecting the environment. As the

ordinary people, we can do the small things, such as do not throw away the

rubbish and join some activities to bring the world green, like planting trees.

Every small act can make a difference. Some day, when we live with the

environment friendly, what we do is worth.

Last Sunday my father and I went fishing along a river. We found the water so dirty that we could hardly catch fish in it.

A lot of factories along the river always poured their waste water and rubbish straight into the river which made the river water polluted. In this way most of the fish in the river were killed.

If the river water all over the country is polluted like this， no living things will exist in the water. As we all know， environmental pollution does great harm to living things and human beings. Now more and more people have come to realize how serious this problem is. Our government is doing her best to take measures to fight against pollution. We expect that the water in every river will be made cleaner and cleaner before long.

上个星期日我和爸爸一起去钓鱼。我们发现水太脏了，我们几乎不能在它的鱼。

沿着这条河的许多工厂总是把废水和垃圾倒进河里，使河水受到污染。这样，河里的大部分鱼都被杀死了。

如果这个国家的河水都被污染了，水里就不存在生物。我们都知道，环境污染对生物和人类都有很大的危害。现在越来越多的人开始意识到这个问题有多严重。我国政府正在尽最大努力采取措施打击污染。我们期望在每一条河流中的水将在长时间内变得更清洁，更清洁。

In order to support Beijing to hold the 2008 Olympic Games and protect our environment,an activity was organized by the Young League and Students Union of our school during the week from June 3rd to June 8th.

All the students in the senior grades took active part in it.Some students cleaned the playground,watered the young trees and flowers,and removed weeds.Some students collected waste paper,old books,empty cans and old toys.They had them sorted and sent them to the recycling center.

The activity is really instructive.Now we all have realized how important protecting the environment is.

Recently, the problem of environmental pollution is getting more and more serious.

The air pollution, noise pollution and water pollution are found on the newspaper everywhere.

It is obvious that we should do something to protect our earth. Because we have only one home.

We should try our best not to pollute the environment and appeal the people around us make their effort to protect our unique home.

近年来，环境污染问题越来越严重。

空气污染，噪音污染,水污染是在报纸上随处可见。

很明显，我们应该做些什么来保护我们的地球。因为我们只有一个家。

我们要尽量不污染环境，还要呼吁我们周围的人努力来保护我们唯一的家园。

Now the earth is yellow and the green is decreasing. Whats going on here? It turns out that people are cutting down trees, which not only causes the birds to lose their home, but also causes the collapse, the flood and so on. Without trees, our earth would seem to be missing a supporting beam.

Now each store all follow our hobby, mass production soda, and soda "appearance" is the jar and jar is a kind of pollution, the road, the park even schools have become their home. The cans are made of aluminum, which is also harmful to the human body.

You know what? Waste batteries contain a lot of heavy metal pollutants - chromium, lead, mercury, etc. The effects of pollution from used batteries are slow and profound. When they are mixed with ordinary household waste, under certain conditions, will produce a series of chemical reactions, slowly releasing toxic substances, these toxic substances atmospheric pollution when burned, seeping into the underground pollution of groundwater and rivers and lakes; Once in the soil water, it will enter the body through the food chain, damaging the nervous system, hematopoietic function, kidneys and bones. Therefore, it belongs to hazardous waste. Experiments show that a mercury battery pollutes more than one persons lifetime total.

Before the river bottom, can see Derek fisher, now the factory in order to improve the efficiency, they put the stream discharge sewage as a good place, river sewage got dirty, passing pedestrians were quickly leave.

To conserve water is to protect our environment, which is to save resources. We want to own practical action to protect the environment, the most simple is to start from oneself, pay attention to save water, such as: use after the tap turn off the tap at any time; Water the washing water with water, rinsing and flushing. Dont think that a few drops of water in a water bridle cant make a difference. A water bridle drops a drop of water every second, and a year is a waste of 36 square water. If a family saves one person per month, how much water is saved in a month?

Fortunately, people have learned the earth now to be polluted, everyone has to act, I hope people who didnt act, they bent and picked up the paper on the ground, a low back, let us tomorrow is more beautiful, neat!

[初中关于保护环境的英语作文

参考提示：

1. Why is the school environment important?

2. What should we do to protect our school environment?

3. How will our school be like if we all protect it?

4.起始句：Taking care of our school and

Taking care of our school and protecting our school environment! A clean and pleasant environment is very important, because it can make us healthy and happy. It’s our duty to protect our school environment. We should clean the school every day. And we shouldn’t drop trash here and there. We should pick it up when we see trash on the ground. We shouldn’t draw on the wall. If we all like our school the same as we like our homes, our school will be more beautiful. We will enjoy our study better. Let’s protect our school environment from now on, shall we? (102 words)

[英语作文：保护学校环境

In particular, is the giant whale mass stranding of whales is not uncommon, even in the same group of whales stranded in a few days in a row, but because it has always been hard to understand. According to the scientists speculate, as the whale to have a strong group of marine animals, and the scope of activities near the coast, so there are two possibilities: First, the leading whale sick, toward the beach, the other whales also customary to follow the whale to the Forward setting; Second, the whales chasing prey into the bank. When one or a few stranded whales, other whales will follow suit or to try to rescue, resulting in a large number of whales stranded at the same time on the same piece of the beach.

In Taiwan, because most people do not understand the importance of wildlife, the wildlife is in a poor situation. We Chinese are fond of eating anything delicious, so there are many animals killed by hunters. People enjoy eating tigers, bears, birds, and lions, so there are fewer and fewer birds flying in the sky and fewer and fewer bears running here and there in the forest. Instead, we often see them for sale at the market. How poor they are! And how cruel we are!

In my opinion, we should try every possible way to preserve wildlife. First, no one is allowed to hurt any wild animal. Second, the authorities concerned should punish those who kill any wild animal. Third, we should pay more attention to those endangered species to protect them from being eaten. If we can do so, nature must become very beautiful.

在台湾,因为大多数人不了解野生动物的重要性,野生动物是在一个贫穷的情况下。我们中国人喜欢吃什么美味,所以有许多动物被猎人杀害。人们喜欢吃老虎,熊,鸟,和狮子,所以有越来越少的鸟在天上飞,越来越少的熊在森林里到处跑。相反,我们经常看到他们在市场出售。他们是多么可怜!我们是多么残酷!

在我看来,我们应该尝试每个可能的方法来保护野生动物。首先,没有人可以伤害任何野生动物。其次,有关当局应该惩罚那些杀害野生动物。第三,我们应该多注意那些濒危物种保护其不被吃掉。如果我们能这样做,自然必须变得非常漂亮。

Boundless sea to look forward to, give people the beauty, give a person warm motherly love.

The sea is like a poem; it jumps; like a picture, rich in meaning; and like a symphony, vast and mighty...... It is like a mirror; sometimes calm, sometimes filled with rage, overwhelming, to sail the boat overturned. In my mind, the sea is blue world, is also the cradle of life. Pregnant with many free and small life. The sea is so mysterious, so charming!

Now the sea has changed. The sea is no longer clear, it becomes muddy and dirty. Washed up on the beach, left is no longer alive and kicking the fish shrimp, instead of the piles of rubbish, but also mixed with a lot of dead fish shrimp, stinking. Why is that? Its all because of us. When people admire the beauty of the seaside, they throw the foul rubbish into the sea. There are also people living on the beach, the toilet drain pipe to the bottom of the sea. Whats worse is that the factory waste water flows into the sea in large stocks, and the sea is dyed in a strange color. Led to the birth of a lot of lack of brains, low IQ infants, our next generation - bright eyes [voice tender], the face of the next generation of red, will never see the beautiful blue sea.

Someone once did an experiment. He compared a basin of water to the ocean, and dropped a drop of ink into the sea. Immediately, the ink slowly spread out, became shallow and disappeared. The sea water was almost as clean as ever. If the ink kept dropping, the color of the sea would be deeper and darker, and eventually it would become a basin of black water. 6 billion people on the earth produce large quantities of living waste water and industrial pollution every day. Like ink, it has been injected into the clear sea water. It has become a polluted lake.

To the health of our human beings, to see the beautiful blue sea for our children and grandchildren. Let us act now, love the ocean as much as we love life, and love the common blue home of mankind.

First of all, let me tell you a true event. That is my grandpa with me by boat from yichang to three gorges occurs when one thing.

We all got up that morning, the people on board, is preparing to play water to wash shu. But the faucet for half a day on the boat were down only a few drops of water, one asked, originally is the boat ran out of water! So, we only have stood in long lines, slowly, etc. Although I looked at the ship, the ship under a stream of water, but no one would like to use it. Because the water is so dirty, so HunHuang, who dare to use? Line only slowly, slowly, etc!

Although in the high-speed development of science and technology nowadays, but the impact on our environment. Reduced river pollution, air pollution, the trees, the increasing of the desert... All this is all thanks to the human! Countries while in value, although the world in value, environmental protection, what and how much these things figure up attention? In my opinion, is rare. Although countries in so to speak, but whats the use of words and not of deeds? Did just a few, too! Dont grab from main reason! You see, the Yellow River water is not still contaminated? So the factory does not still pollute the atmosphere? Should grasp, starts from the quality of people, quality grab, but the country and the world to do so? No! Just like to do even when you are done. In the polluted environment is not so?

Animals are extinct, flash floods in explosion, dust storms still exist... It fully shows the environmental pollution! Countries will only go to disaster relief, instead of simply grabbed, will only go to disaster relief, whats the use? Dont all kinds of disaster is still in? We should like lu xun. He had become a is in order to save the Chinese, and he found that it will not solve the fundamental, so he became a writer, to save the people of the spirit. Because this is the fundamental! So, we as the master of the 21st century, you should understand, what is the root of the damage to the environment, from the point to solve it. Work hard -- the 21st century we!

首先，我先给大家讲一个真实的事件。那是我随我的外公从宜昌坐船前往三峡时发生的一件事。

那天早晨，船上的人都起来了，正准备打水洗淑。可是船上的水龙头半天也只下来几滴水，一询问，原来是船上的水用完了!所以，大家只有排着长长的队伍，慢慢的等。我望着船下，船下虽然有着流不尽的江水，但却没有一个人愿意来使用它。因为江水太脏了，是那么的浑黄，又有谁敢去使用呢?只有慢慢的排队，慢慢的等!

如今科技虽然在高速发展，但这影响到了我们的环境。河流污染，大气污染，树木的减少，沙漠的增多……这一切的一切都是拜人类所赐!国家虽然在重视，世界虽然在重视，什么环境保护日，这些事又有多少人影起了注意呢?在我看来，是极少的。国家虽然在这么说，可是光说不做又有什么用呢?做了也只是少数罢了!根本没有从主要原因抓起!你看，黄河的水不是还在被污染吗?工厂不照样还在污染大气吗?抓，就应该从小抓起，从人们的素质，品质抓起，可是国家乃至世界这么做了吗?没有!即使做了也只是做样子罢了。环境不是照样还在被污染吗?

动物还在灭绝，山洪还在爆发，沙尘暴照样存在……这都充分说明了环境还在污染!国家只会去赈灾，而不去根本抓起，只会去赈灾，这又有什么用呢?各种灾难不还是照样在发生吗?我们应该像鲁迅一样。他当初从医是为了拯救中国人，而他发现，这解决不了根本，所以，他当了作家，去拯救人们的精神。因为这就是根本!所以，我们作为21世纪的小主人，就应该明白，什么是破坏环境的根本，从要点去解决它。努力吧――21世纪的我们!

As we all know,the number of Siberian tiger is becoming smaller and smaller. The appearances of Siberian tiger is terrifyingly.They are with an red-brown colour and brindle on their furs.They are mainly inhabit in forests and mountain area of the north by east in China.Their favourite food is fresh meat,especially the small animals.Their habitual behavior is to hide by day and come out at night. And we should try our best to protect them.

we all know that the panda is a kind of lovely animals, but its behavior, some children are not completely know. In order to solve this mystery, recently I have made an observation about it.

The panda is a kind of precious animal, is very attractive. Its shorter in four rubber slow action. On the face of fuzzy embedded with a pair of black eyes. Combined with a black and white hair, more beautiful and lovely.

Pandas like to walk leisurely on the flat ground, play happily. Sometimes looked up people, sometimes low head, as if in search of something, and like to think. When it is happy, somersault on the ground, like a big ball rolling on the ground.

The panda when sleeping, belly up. Sometimes, patting his stomach with his front PAWS, sometimes, it push to the legs, was turned over. I thought it waked up, in fact, it is still in sleep. Waked up just turn it up, with his front PAWS rubbed his change to eyes, curiously at the people, with for she walked away to the other side of the fence to sit down, as if to clear his mind. (pupil composition nets)

When the panda eat, often straight body sitting cross-legged, PAWS grab fresh bamboo leaves to her mouth. It loves to eat fresh bamboo leaves, bamboo stem, and milk and eggs. Pandas eat and drink drink throat. It came to the pool, fell down, the ball pool, lower the head, plump plump to drink up. See the face of it, really makes people laugh.

The panda is one of the worlds rare animals, is a darling of the zoo. Its every move, add fun to tens of thousands of visitors.

With the development of economic,people now living a better life.But at the same time,many of the earths animals have already died out.

Nowdays,more and more animals lost their homes and they have no choice but to face the sorrow of missing relatives and friends.What makes it comes about?What makes their living condition even worse?The answer is human!Some people cut down plenty of trees to make fortunes,which damaged the forest and made the animals lost their home.And there are also some greedy people even hunt for animals to make money,which lead a terrible result--a number of animals are in danger.

Each anmimal especially wildlife is our friend,they play an important role in ecological balance.So,lets take action,planting trees,buliding birdhouses and so on to pretect our earth.

随着经济的发展,人们现在过着更好的生活。但与此同时,地球上的很多动物已经灭绝了。

现在,越来越多的动物失去了家园,他们别无选择,只能面对失踪亲友的悲痛。它是什么?是什么让他们的生活条件更糟糕吗?答案是人类!有些人砍伐大量的树木让财富,破坏了森林,使动物失去了他们的家园。甚至还有一些贪婪的人寻找动物赚钱,导致一个可怕的结果,许多动物都处于危险之中。

主义每个动物特别是野生动物是我们的朋友,他们在生态平衡发挥重要作用。让我们采取行动,种植树木,建筑物的鸟屋等等来保护我们的地球。

It seems we are living in the conflict between modern and traditional cultures every day.Hearing the blaring of horns the moment you step out of your house,seeing the so called "pop" the moment you open your eyes,you cant help thinking,"Will the traditional culture be gradually lost?"

Many people believe so.They may put right in front of you all the evidences they can dig out.They may argue that people are rushing to restaurants instead of cooking at home,listening to pop music but not traditional,wearing in a way people couldnt imagine ten years ago.Modern people like the air of freedom,not to be restrained by traditions.They offer this long list,only trying to confirm that this world is full of fashion,competition and temptation and the traditional culture is fading and will be lost at last.

Though we are now living in a world in which undeclared aggression,war,hypocrisy,chicanery,anarchy are part of our daily life.Though this is a skeptical age,and our faith has weakened,our confidence in some aspects of the traditional culture should and would never be lost.

Wouldnt you agree that our traditional culture is always credited with modesty,politeness and respectfulness,which have always been treasured for more than five thousand years?Even in this modern world,people still admire those with good manners,those who are polite to others or respectful to old people.

Wouldnt you agree that our Chinese traditional music is beautiful and artistic and our Chinese tea culture is always an appealing treasure to people around the world?

So there may just be some changes in our lifestyle or our attitudes towards life,but little change occurs to some fundamental aspects of our traditional culture that people still treasure in heart.

The traditional culture will never be lost,I believe.

[保护传统艺术英语作文

The simplest water pollution definition would be any contamination of water bodies with some pollutant(s) that changes physical,biological,and chemical conditions of any body of water making this water harmful for environment and surrounding ecosystems.

Water pollution occurs once too much pollutants (mostly in form of different waste) are discharged directly or indirectly into water bodies.Water pollution does not only cause great environmental damage but is also the leading worldwide cause of deaths and diseases responsible for the deaths of more than 14,000 people each day,mostly in developing countries.

Many people are not aware that water pollution is serious problem in almost all parts of the world,and not just in third world countries like some choose to believe.In fact many experts will tell you that reality is completely different than the common belief,and that actually water pollution problem is already out of control.

Water pollution problem is in most cases connected with the careless handling of chemical agents,toxins introduced into our water through industrial dumping,and farm runoff.All these factors make our water unsafe to drink.

As we all know，the environmemt around us is getting worse and worse .In some places，we cant see fish swimming in the river or trees on the hills. Some people even have no clean water to drink. So I think we must do something to protect the environment. But what can we do?How to protect our environmemt ?For example，we can go to school on foot or by bike . we can use shopping baskets not plastic bags when we go shopping，and we can use both sides of the paper when we write .In a word，if everyone pays more attention to our environment ，there will be less pollution and our life will be better。“There is only one earth”，I hope everyone will protect our environment well.

Campus, such as flowers, sending out the intoxicating fragrance, sending out the breath of love; Campus, such as the rain, has nurtured us, training us; Campus such as dreams, so beautiful, so sweet. I love this garden like campus.

"Green campus", to beautify the campus. Our campus change green and beautiful. Appered, picked a flower and grass, a flower bed, added to life, our campus look brand-new.

"The air is fresh, clean and tidy environment, buildings, surrounded by green trees", who dont want to in such a clean, sanitary, healthy growth of the beautiful campus learning? But a variety of reasons, our campus environment is gradually damaged by bad behaviour of some of my classmates. Now in our beautiful campus, there have been some uncivilized phenomenon, some students randomly throw debris-brick, plastic bottles, sunflower seeds, etc. Whenever naughty wind these waste, running here and there, tinkling like a child, helpless, we can only watch them on campus "dance", and even some classmates in the scribble on the white wall and the desk carved, and disorderly spit phlegm, and so on. All this, cannot match with our beautiful campus. See these phenomena, how would you feel? Learning life can make you happy?

Blue whale is the worlds largest animal, the body was blue-gray. Now catch the l argest blue whale to the site in the Atlan tic near the Falklands. This 33.5 m long b lue whale, weighing 195 tons that is muc h greater than its tongue elephant weigh ing about 3 tons of its 700 kg heart weig ht, lung weight 1500 kg, the total blood weight of about 8 tons to 9 tons, intestin es are half a mile long. Such a large bod y can only live in the vast ocean. Whale i s an outstanding singer in water, "singer" When push "humpback." In 1971, biologi sts from the United States under the sea seeking the "humpback" voice is analyze d and found a very special sound signals . The original of these "humpback" issue d a series of beautiful sounds, sound mil dly varying tone. These sounds continue d for 30 minutes, then sing from scratch, from the cadence, to judge the degree of light sweet Man, can travel to sea whale s never lost. Usefulness of the people all the whales is very good, a lot of dead wh ales now, so that human beings are to b e discarded, we need to protect the whal es, so they continue to multiply Health h abitat. Let people according to their ben efits, create more advanced equipment, whale is a human friend. Why touch? Yes , I have here a bit information: whales, s ea travel will not get lost all use of the w hale is a very good person, and now a la rge number of dead whales, so that hum an beings are discarded, we need to pro tect whales, so that they continue to suff er from habitat reproduction. Let people according to their benefits, create more advanced equipment, whale is a human friend. Whales every day to sleep. Sleep, always a few heads together, and if ther e are sound, they scattered and went aw ay. Whales can live for decades or a cent ury.

蓝鲸是世界上最大的动物，全身呈蓝灰色 。目前捕到的最大的蓝鲸地点在大西洋的 福克兰群岛附近。这条蓝鲸长33.5米，体 重195吨这远比大象大得多了它的舌头重 约3吨它的心脏重700公斤，肺重1500公 斤,血液总重量约为8吨～9吨,肠子有半里 路长。这样大的躯体只能生活在浩瀚的海 洋中。鲸是歌唱家 水中杰出的“歌唱家”当 推“座头鲸”。1971年，美国生物学家对从 海上寻下的“座头鲸”发声进行了分析，发 现了极其特殊的声音信号。原来这些“座 头鲸”发出一连串优美动听、调子不一的 婉转声。这些声音延续了30分钟，然后 从头唱起，从抑扬顿挫、轻曼悦耳的程度 判断，可鲸遨游大海时从来不会迷失方向 。鲸的种种用处对人是很有好处的，现在 鲸大量的死亡，使人类也走向灭亡，我们 要保护鲸类，让它们继续生栖繁衍。让人 们根据它们的好处，制造出更先进的仪器 ，鲸是人类的朋友。 为什摸?不错，我 这里还有一点资料： 鲸遨游大海不会迷 航 鲸的种种用处对人是很有好处的，现 在鲸大量的死亡，使人类也走向灭亡，我 们要保护鲸类，让它们继续生栖繁衍。让 人们根据它们的好处，制造出更先进的仪 器，鲸是人类的朋友。 鲸每天都睡觉.睡 觉时,总是几头聚在一起,要是有响声,它们 就四散游开. 鲸可以活几十年或一百年.

The seas and oceans receive the brunt of human waste, whether it is by deliberate dumping or by natural run-off from the land.

In fact over 80% of all marine pollution comes from land-based activities and many pollutants are deposited in estuaries and coastal waters. Here the pollutants enter marine food chains, building up their concentrations until they reach toxic levels. It often takes human casualties to alert us to pollution and such was the case in Minimata Bay in Japan when many people died as a result of a pollutant building up in food chains. A factory was discharging waste containing methyl mercury in low concentrations into the sea and as this pollutant passed through food chains it became more concentrated in the tissues of marine organisms until it reached toxic levels.

As a consequence 649 people died from eating fish and shellfish contaminated with mercury and 3500 people suffered from mercury poisoning.