С.с по на тему "загрязнения окружающей среды "(140 слов)

                                        ecological problems. 

  nowadays there are many environmental problems. one of them is climate changing. normally the ozone layer protects people from radiation, but now there are holes in the ozone layer and ultraviolet radiation can get to the earth and it can cause illnesses. 

many scientist think that this is the result of air pollution. 

  there aren`t oceans or seas which aren`t poisoned. a lot of them are used for dumping industrial and nuclear waste. nuclear pollution can`t be seen, but its effects can be terrible. 

  there are a lot of endangered species of animals. plants are in danger, too. every day people use natural resources for example we use paper and it`s made of wood. people cut down forests and nowadays we can feel shortage of this resource.  

  if we want to protect our planet, we should ask our governments to make laws which can protect environment. we should develop international cooperation and solve ecological problems together.

                  экологические проблемы.

  сейчас много экологических проблем. одна из них-изменение климата. в принципе (если дословно,то нормально) озоновый слой защищает людей от радиации, но сейчас появилось много дыр в озоновом слое и ультрафиолетовая радиация может попасть на землю, и это может вызвать болезни.

  многие учёные думают, что это результат загрязнения воздуха.

  нет океанов и морей, которые не отравлены. многие из них используются для слива индустриальных и радиационных отходов. радиационное загрязнение не может быть увиденным, но его эффекты могут быть .

  есть много исчезающих видов животных. растения тоже в опасности. каждый день люди используют природные ресурсы, например, мы используем бумагу, она сделана из дерева. люди рубят леса и сейчас мы можем почувствовать недостаток этого ресурса.

  если мы хотим защитить нашу планету, нам следует просить (дословно спрашивать) наше правительство изготавливать законы, которые могут защитить окружающую среду. нам следует развивать межнациональное сотруднечество и решить экологические проблемы вместе.  

Environmental pollution. загрязнение окружающей среды.

people have always polluted their surroundings. but until now pollution was not such a serious problem. people lived in uncrowded rural areas and did not have pollution — causing machines. with the development of crowded industrial cities which put huge amounts of pollutants into small areas, the problem has become more important.

automobiles and other new inventions make pollution steadily worse. since the late 1960's people have become alarmed with the danger of pollution.

air, water, and soil are necessary for existence of all living things. but polluted air can cause illness, and even death. polluted water kills fish and other marine life. on polluted soil, food can not be grown. in addition environmental pollution spoils the natural beauty of our planet.

pollution is as complicated as serious problem. automobiles are polluting the air but they provide transportation for the people. factories pollute the air and the water but they provide jobs for people and produce necessary goods. fertilizers and pesticides are important for growing crops but they can ruin soil.

thus, people would have to stop using many useful things if they wanted to end pollution immediately. most people do not want that of course. but pollution can be reduced gradually.

scientists and engineers can find the ways to reduce pollution from automobiles and factories. government can pass the laws that would make enterprises take measures for reducing of pollution. individuals and groups of people can work together to persuade enterprises to stop polluting activities.

Tyrannosaurus lived throughout what is now western north america. fossils are found in a variety of rock formations dating from 67 to 65.5 million years ago. tyrannosaurus was a bipedal carnivore with a massive skull balanced by a long, heavy tail. relative to the large and powerful hindlimbs, tyrannosaurus forelimbs were small, though unusually powerful for their size, and bore two clawed digits. it was the largest known tyrannosaurid and one of the largest known land predators, measuring up to 12.8 m (42 ft) in length, up to 4 metres (13 ft) tall at the hips, and up to 6.8 metric tons (7.5 short tons) in weight. modern representations in museums, art, and film show tyrannosaurus rex with its body approximately parallel to the ground and tail extended behind the body to balance the head. since it was first described in 1905, tyrannosaurus rex has become the most widely recognized dinosaur species in popular culture. it is the only dinosaur that is commonly known to the general public by its full scientific name - tyrannosaurus rex. it has been frequently represented in film and on television, in literature, and on the internet.

Dinosaurs were a group of animals that ruled our world for about 150 million years. they lived during the geologic middle ages of the earth's history, in a time that is called the mesozoic era. dinosaurs were reptiles and belonged to the greatest animals on earth. the age of dinosaurs the mesozoic era is often called the age of dinosaurs. it began about 250 million years ago and ended about 65 million years ago. geologists divide it into 3 parts: • the triassic • the jurassic • the cretaceous during the mesozoic period the earth consisted of only one single mass of land. about 200 million years ago this huge continent, pangaea, broke into many pieces, which started to drift apart. continents moved slowly into the position they are today. the climate during the age of dinosaurs was different than today's. it was warmer and there was more vegetation. the land was full of swamps, green plains, rivers and lakes. the first forests, mostly conifers that had cones on them emerged. ferns and mosses also appeared on the earth. physical features of dinosaurs dinosaurs were land animals that lived in almost all parts of the world, from tropical regions to deserts. they came in many different sizes and had different body shapes. some were huge creatures, up to 40 meters long and a hundred tons in weight. others were as small as a chicken. most dinosaurs had a scaly skin with no hair on their bodies. although we often think dinosaurs were grey, dull creatures, experts think that some of them could have been really colorful. until today scientists don’t really know if dinosaurs were cold- or warm-blooded animals. they had their own way of regulating their body temperature. some dinosaurs were able to walk on their two hind legs and stood upright. they had hollow, light bones which enabled them to move quickly. others had strong bones to support their massive weight. they moved slowly on all four legs. some types of dinosaurs had powerful jaws with sharp teeth made for eating meat and tearing apart their prey while others had long necks and ate leaves off of trees and other plants. most dinosaurs laid eggs. after they hatched, baby dinosaurs grew very quickly. they reached their full size after 7 or 8 years. it is still unclear how long dinosaurs lived, but some may have survived up to a hundred years. fossils show that some dinosaurs lived in herds for at least parts of the year. dinosaurs were able to protect themselves in many ways. some of them used their horns for protection; others drove enemies away with their massive size. groups of dinosaurs dinosaurs are divided into two basic groups. ornithischians were dinosaurs that had bird-like hips and other features that you can find in modern birds. many had a skin made of plates and most of them were plant eaters. the stegosaurus, for example, was a plant-eating dinosaur with a small head. it reached a length of up to 10 meters. saurischians were dinosaurs that had hips like lizards. some of them belonged to the largest creatures that ever roamed the earth. the brontosaurus, for example, was an enormous animal. it had a long neck, a small head and ate plants from trees. it moved slowly because it was so heavy. some saurischians were meat-eating dinosaurs. the fiercest of all was the tyrannosaurus rex, the king of lizards. the t. rex was almost 4 meters tall and had sharp teeth. it had short front legs but very strong and massive hind legs. tyrannosaurs roamed across north america and central asia towards the end of the mesozoic period. why dinosaurs died out dinosaurs became extinct towards the end of the mesozoic era, about 65 million years ago. although there are still some mysteries left most scientists think that a drastic change in climate killed them. winters became too cold for dinosaurs to survive. another theory says that a huge asteroid hit the earth at that time. it whirled so much dust and gas into the atmosphere that sunlight was blocked out for millions of years. dinosaurs probably starved to death because there was no food. other scientists maintain that dinosaurs may have evolved into birds. some modern birds, like ostriches may have come from dinosaurs like the archaeopteryx.