Презентация на тему экология по английскому языку. Презентация по английскому языку "экологические проблемы"
Ecology Or Technology
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Ecological Problems
Ecology is a science about nature surrounding us.
The main ecological problems are:
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Many rivers and lakes nowadays are polluted with different waist products, which are very harmful for plants and animals living in them. Some species are extinct today. Water in the majority of rivers and lakes has become undrinkable.
In big industrial towns and cities the air is very dirty. Sometimes people have to close the windows not to let it in. When it is not windy smog is hanging over the city and people breathe in poisonous substances.
Some waist products are buried in the ground , they poison soil and make harm to the plants which grow on it .
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Where Does Acid Rain Come from?
People have leaved on the Earth for thousands of years. They tried to make their life safer, easier and more comfortable. They have built big houses, huge factories and plants, lots of different cars and machines and power stations.
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Where Does Acid Rain Come From?
The smoke from cars, factories and power stations go into the air. This smoke contains sulphur dioxide and nitrogen oxide. These substances mix with water vapour in the atmosphere and form sulphuric acid and nitric acid. Sunlight turns these acids into poisonous oxidants which fall in rain or snow onto the trees.
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How Does Acid Rain Influence Trees?
Acid rain influences deciduous trees like oak, beech and birch as well as coniferous trees like fir and pine. First the branches turn yellow and brown. Then the trees" needles or leaves fall. The roots and trunk shrink. Finally trees die. In the Black Forest in southern Germany 75% of the trees have been damaged or killed.
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Why Are Trees So Important ?
Trees are important because they provide a home for many other plants, and animals too. They protect the flowers which grow on the forest floor. They provide food for insects, reptiles, birds and mammals. They protect the soil from the wind and the rain. Most important of all, the forests are the lungs of the planet. Trees produce the oxygen which we breathe. If the trees die, we will, too.
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The thoughts of the 9G form, Kurgan, Gymnasium 19and ecological problems
Ecology: First of all it is the relationship of humans and Nature. All of us depend on Nature. We must value and protect it. Ecology is the science, which study our planet from the “points of view” such natural things as plants, animals, insects etc. I think ecology is Nature itself.
The causes of the ecological problems:One of the most important problems for future of humanity is ecological problems, because people destroy our beautiful planet! So people create these problems themselves!People kill the animals, cars pollute the environment.We forget rubbish in the forests or just throw it in the forests. People have been polluting the Earth for many centuries! Pollution of the air, water and soil, using poisonous substances in industry, forest destruction, this carelessness can become a cause of scary future problems, such as acid rains, very high or low temperature, radiation, holes in ozone layer etc.
The RESULTS: The water is really important for life in the Earth, but a lot of rivers, lakes and springs are becoming dirty today. Such water is not good for drinking even for wild animals and plants. What will happen with them if they are not be able to drink? Our life depends on plants and animals – they are our brothers, of course, but they are our food at the same time. They help us to live and to survive!
This planet is our home because we have everything for us. We can breathe here because of oxygen which we need. But in any forest we see broken trees and pulled up flowers, camp-fires and the tons of rubbish after previous visitors. Our life is destroyed with our own hands!
WHAT TO DO?There are many discussions and arguments between scientists, politicians, philosophers and ordinary people. How can we stop the future catastrophe, which unfortunately is going because of people’s influence? In my opinion everybody can do many things to protect our planet! For example, the first step is to put rubbish into the rubbish bins.If you want the air to be clean, you mustn’t smoke in the streets (and everywhere), we mustn’t crash the forests and so on!Many people work as the volunteers – they clean the forests, built foster homes and do all the best!
Fortunately there are many environmental organizations all over the world, for example Greenpeace, WWF, London Wildlife Trust, The Friends of the Earth and so on. I think it is a really important step of humanity. I mean this situation is not so hopeless.
IN CONCLUSION it’s important to say that even if people consider themselves the top of the nature chain in the world they have to behave themselves in a correct way! Animals and plants depend on us and our good or bad activities. They have the right to live in the Earth happily too, that’s why we should not trouble them for our needs only. Let’s protect and respect them because we live together in this beautiful planet, depend on them and visa versa!
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Ecology is the scientific study of the relation of living organisms to each other and their surroundings. Ecology includes the study of plant and animal populations, plant and animal communities and ecosystems.
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Ecological problems are: Overuse of pesticides Climate change Urban development Global warming Genetically modified foods Toxic waste Solar and wind power Recycling scheme
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A pesticide is any substance or mixture of substances intended for preventing, destroying, repelling or mitigating any pest. A pesticide may be a chemical substance, biological agent (such as a virus or bacterium), antimicrobial, disinfectant or device used against any pest.
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Climate change is a long-term change in the statistical distribution of weather patterns over periods of time that range from decades to millions of years. It may be a change in the average weather conditions or a change in the distribution of weather events with respect to an average, for example, greater or fewer extreme weather events. Climate change may be limited to a specific region, or may occur across the whole Earth.
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Urban, city, and town planning integrates land use planning and transportation planning to improve the built, economic and social environments of communities. Regional planning deals with a still larger environment, at a less detailed level. Urban planning can include urban renewal, by adapting urban planning methods to existing cities suffering from decay and lack of investment
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Global warming is the increase in the average temperature of Earth"s near-surface air and oceans since the mid-20th century and its projected continuation.
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Genetically modified (GM) foods are foods derived from genetically modified organisms. Genetically modified organisms have had specific changes introduced into their DNA by genetic engineering techniques. These techniques are much more precise than mutagenesis (mutation breeding) where an organism is exposed to radiation or chemicals to create a non-specific but stable change.
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Solar power is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP).
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ECOLOGICAL PROBLEMS Plan: Man-the child of nature Ecological problems Discourse about the problems Ecological organizations Conclusion
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Man-the child of nature We live on a very beautiful planet – on the Earth. Our planet has very rich resources: the bright blue of the sky, fresh, crystal-clear mountain lake water, the rich green of the mountains slopes, wild flower, picturesque views – all these sceneries of nature fill us with admiration. That’s why those who live in cities prefer spending their days off and their holidays far from the noise of the city, to be closer to nature. Perhaps they like to breathe fresh air or to swim in clear water because the ecology is not so poor as in the cities.
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Ecological problems Ecology is the study of the ways in which organisms (plants and animals) depend upon each other and upon their surroundings. Each organism requires conditions in order to be able to live and breed. These conditions are its environment by changing the ecological conditions.
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So, pollution is one of the most burning problems of nowadays. Now millions of chimneys, cars, buses, trucks all over the world exhaust fumes and harmful substances into the atmosphere. These poisoned substances pollute everything: air, land, water, birds, animals and people. So, it is usually hard to breathe in the large cities where there are lots plants. Everything there is covered with soot and dirt. It affects harmfully on people’s health.
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Water pollution is very serious, too. Ugly rivers of dirty water are polluted with factory waste, poisoned fish are all-round us. And polluted air and poisoned water lead to the end of the civilization. So, nowadays a lot of dead lands and lifeless areas have appeared. Because our actions and dealings can turn the land to a desert.
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The Baltic Sea is a special case. Because it is such a small sea and it becomes dirty very easily. Its waster changes slowly through the shallow straits. As many as 250 rivers run into the Baltic. There are hundreds of factories in these rivers and millions of people live along them. Quite a lot of big cities lie on its coast. All these combined with the active navigation of the sea naturally affects the state of the sea water and the shore line flora and fauna. People suffer from the waster pollution; cancer deaths increase people’s concern.
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And there is no escape from this ecological crisis without organizing a single body dealing with the environmental problems, developing and carrying out a nationwide program of environmental protection and co-operating with international schemes.
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Discourse about problem So, we see that our environment offers an abundance of subject matter for discussion. The problems and prospects of the blue planet interest not only scientist and futurologists, but also politicians, industry, the public – and above all, young people! There is hardly a young person who is not conserved with the preservation of our natural habitat. To recognize environmental problems and master them, to reduce and avoid environmental pollution, to discover and develop ecologically sound technologies – there are the essential building blocks for our future.
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Whether scientist or politicians, bankers or students, whether Greek, Norwegian, Hungarian or Finn … all are encouraged to make a contribution towards protecting the environment. Dedication and the courage to change one’s way of thinking are called for.
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Population Fears Scientists now predict that by the year 2050 the population will be doubled what is today. The fact remains that the rate of food production fell behind population growth in many of developing countries. The annual fish catch already exceeds what the world ‘s oceans can successfully sustain. If we go on using our natural recourses at today’s rates, we will have used up the entire reserves of cooper, natural gas and oil by the year 2054.
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But the problem ahead lie not so much in what we use but in what we waste. What faces us is not so much a recourse crisis as a pollution crisis. The only solution is to try to change the areas of consumption, technology and population. Changes in technology must be baked by slower population growth. And it can be achieved by education in health and women’s rights. And there is a little hope of reducing consumption over the next half century.
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Nowadays there are many different pressure and interests groups in the world, which try to find solutions to the problems of pollution at the national and international level. So they are groups of people with a common interest in trying to draw the public attention to environment problems, to influence the government decisions.
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Ecological organizations There are many ecological organizations in the world, but I can tell you only about seven of them, because they are most famous. At first I’ll tell you about “Kids F.A.C.E”. The main mission of “Kids F.A.C.E” is to provide information, to encourage and facilitate youth’s involvement with effective environmental action. Membership of organization is free for all. “Kids F.A.C.E” started in 1989.
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Greenpeace is an organization whose members work actively to protect the environment from damage, caused by industrial processes or military activities. Greenpeace has been campaigning against environmental degradation since 1971.
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PeTA (people for the ethical treatment of animals) is one of the largest animal right organization in the world. PETA is dedicated to establishing and protecting the right of all animal. This organization focuses their attention on the areas in which the largest numbers of animals suffer more intensely for the longest periods of time. Founded in 1980.
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ISSG (invasive species specialist group) aims to reduce threats to natural ecosystems and the natural species they contain by increasing awareness of invasive alien species. ISSG is a global group of scientific and policy experts on invasive species from 41 countries.
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RSPCA (the Royal Society for the Prevention of Cruelty to Animals) has been working since 1824,promoting kindness to animals, trying to prevent cruelty to them. This organization called the Royal Society for the Prevention of Cruelty to Animals because Queen Victoria gave her permission for the RSPCA to be called that.
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