Какой из глаголов может быть прилагательным?

Environmental pollutionpeople have always polluted their surroundings. but until now pollution was not such a serious problem. people lived in uncrowned 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.    загрязнение окружающей средылюди всегда загрязняли окружающую среду. однако до последнего времени загрязнение не было такой серьезной проблемой. люди жили в слабозаселенных сельскохозяйственных областях, у них не было загрязняющих природу машин. с развитием перенаселенных промышленных городов, в которых огромные количества отходов выбрасывались на маленькой площади, эта проблема стала гораздо серьезнее.автомобили и другие новые изобретения делают загрязнение все интенсивнее. в конце 60-х годов люди начали ощущать тревогу в связи с опасностью загрязнения окружающей среды.воздух, вода и почва необходимы для существования всех живых существ. однако загрязненный воздух может послужить причиной болезни и даже смерти. загрязненная вода убивает рыб и других морских животных. на загрязненной почве не могут выращиваться пищевые культуры. кроме того, загрязнение окружающей среды портит природную красоту нашей планеты.проблема загрязнения окружающей среды так же сложна, как и серьезна. автомобили загрязняют воздух, но предоставляют людям возможность передвижения. фабрики загрязняют воздух и воду, но они предоставляют работу людям и производят необходимые товары. удобрения и пестициды важны для сельского хозяйства, но они могут разрушать почву.таким образом, людям пришлось бы прекратить пользоваться многими полезными вещами, если бы они захотели прекратить загрязнение окружающей среды сразу. большинство людей, конечно, этого не хочет. однако загрязнение может быть сокращено постепенно. ученые и инженеры могут найти пути сокращения вредных выбросов от автомобилей и фабрик. правительство может издать законы, которые бы заставили предприятия принять меры для уменьшения загрязнения. отдельные лица и группы людей могут сотрудничать, чтобы убедить предприятия прекратить виды деятельности, вызывающие загрязнение окружающей среды. 

One and a half thousand years ago the territory of today’s St. Petersburg and the adjacent lands were inhabited by different tribes. They were Vod, Izhora and Korela. Then in the middle of the 8th century Slavic tribes came to these lands. In the 10th century these lands became part of Kievan Russia.       
  The geographic location of these lands was very convenient. The major trade route lay across the Gulf of Finland, along the Neva and Lake Ladoga." That route was called “from the Varangians to the Greeks”.That trade route linked Northern Russia to South­ern and the Baltic lands and Scandinavia to Bizantium.   
  In the 12th century Kievan Russia broke up. These lands became a constituent of the rich Novgorod Feu­dal Republic.      
  From the 13th to the 16th centuries Sweden attempted to capture these lands. The Novgorodians tried to protect their lands. In 1323 they built the fortress of Oreshek. But soon this fortress was captured by the Swedes. In 1617 the Swedes constructed the fortress of the Nienschanz at the mouth of the river Okhta.     
  Thus Russia was cut off from the Baltic Sea. The Baltic Sea was an important waterway leading to the countries of the Western Europe. In 1700 the war be­tween Russia and Sweden for the age-old Russian lands, for an outlet to the Baltic began. We know this war as the Northern War.The Northern War lasted 21 years. It ended in 1721 with Russia’s victory.      
   The beginning of the war wasn’t successful. But the fortress Noteburg (former Oreshek) was captured by the Russian Army on the 11th of October in 1702. In May of 1703 the important strategic point was cap­tured by the Russian Army. It was the Nienschants Fortress.            
  “The window to Europe” was opened. And Peter the Great ordered to construct a fortress. The foundation stone of the city was laid by Peter I on the 16th of May (the 27th of May by new style) in 1703 on Zayachy island. The city began as a fortress and a port.      
   Peter I decided to move the capital from Moscow to St. Petersburg. In 1712 St. Petersburg was declared the new capital of Russia. The new city went up very fast. Peter I ordered to build houses only along the streets according to the plan and not at random. The tsar himself supervised the construction of the new city. The best architects, sculptors and artists creat­ed it. And some 20-30 years later it could compare with Europe’s largest cities. St. Petersburg received the poetic name of “Northern Venice” by its remark­able architectural ensembles.      
 At present St. Petersburg is one of the most beauti­ful cities in the world.