1. If people don't cut down trees,... 2. If we plant more trees, bushes and flowers, the air we breathe... 3. If people didn't throw litter, the streets...
4. Animals and birds wouldn't have lost their habitats if... 5. If we used public transport,...
Earth is surrounded by air membrane - atmosphere. it is a mechanical mixture of gases. the atmosphere has several layers. most important for a person is the bottom layer - the troposphere. there's clouds are formed, born thunderstorms, downpours and snowfalls. here is all the water vapor. its height ranges from 8 to 12 km. a characteristic feature of the troposphere is to reduce the height of the air pressure and decreasing temperature. the reason is that sunlight tropospheric air almost transparent and it is heated and cooled mainly on the ground.the layer of air that separates the troposphere from the layer that lies above is called tropopause (thickness from tens to hundreds of meters).above at a height of 8-17 to 50-55 km is the stratosphere. it has poor water vapor. therefore, there is no rapid process of cloud formation and precipitation. the temperature in the stratosphere increases with altitude. the air in it is heated by sunlight. here is the ozone layer, the air is enriched triatomic oxygen. it protects all life on earth from harmful effects of ultraviolet solar radiation hard.more stratosphere is the mesosphere above, where the temperature drops with height.thermosphere borders between the heights of 80 and 800 km. on the stratosphere and thermosphere we know very little.the bulk of the atmosphere contained in a relatively thin layer,in which the density of air decreases rapidly with altitude.because 1 m3 of air at sea level weighs 1033 grams and at an altitude of 40 km - only 4 hwe live in the lower layer of the atmosphere. so you can see how clouds are formed, feel pody winds, falling on our heads precipitation. with the atmosphere associated with such extreme natural phenomena such as snow, dust storms, hurricanes and tornadoes, floods and more.recently -meteorolohy scientists are sounding the alarm: today the earth's atmosphere is warming much faster than ever in the past. this is mainly due to human activities: burning large quantities of coal, oil, gas, and commissioning of nuclear power plants; burning fossil fuels and deforestation as a result of accumulated carbon dioxide atmosphere. over the past hundred years the concentration of carbon dioxide in the air has increased by 17%. the earth's atmosphere it effect like glass in a greenhouse or a greenhouse, it freely passes solar rays to the earth's surface, but keeps it warm. this causes heating of the atmosphere known as the greenhouse effect, which could cause a global environmental crisis.as already mentioned, at altitudes of 20-50 km air contains increased amounts of ozone, which is formed by ordinary diatomic oxygen absorbing ultraviolet solar radiation. as a result of photochemical reactions of ultraviolet radiation energy is spent on the formation of ozone from oxygen. recently, the amount of ozone in the ozone layer rapidly decreases, which is extremely alarmed scientists in the world. if the ozone layer disappears completely, then at least it threatens destruction of the earth's biota (environment).established that the ozone layer contribute to some chemicals, including products and technological activity. modern industry makes extensive use of so-called freon as a refrigerant in household refrigerators and refryzhektorah as aerosol rozbryzhuvachi in cans with paint, perfume and so on. each year the world produced millions of tons of cfcs. for a man freon vapor is not harmful, and they are extremely dangerous to the ozone layer. once in the stratosphere by ultraviolet radiation they decompose releasing chlorine. this substance acts on ozone as a strong catalyst, expanding it to oxygen molecules. now take measures on preservation of the ozone layer: in 1985 the montreal protocol on protection of atmospheric ozone, which is based on an agreement to reduce the consumption of cfcs with subsequent change of safer chemicals.
Novosibirsk is a city in Russia, administrative center of Novosibirsk region and the Siberian Federal district, a major industrial, transportation, scientific and cultural centre, is located in 3303 kilometers from Moscow.
The city is located at the Priobskoye plateau adjacent to the valley of the river Ob, near the reservoir formed by the dam of the Novosibirsk hydroelectric power station.
Novosibirsk is the largest city of Siberia and the largest municipality in Russia. Its population in 2006 is 1 million 397 thousand inhabitants. The largest Novosibirsk belongs to the third place in Russia after Moscow and St. Petersburg. The city covers an area of about 500,kV. km (50021 ha).
Novosibirsk lies in the continental climate zone; the average annual air temperature is +0.2 C. Characterized by large fluctuations average (38 C) and absolute (88 C) temperatures. The average air temperature in January -18,8 C, in July +25 C. the lowest temperature was recorded on January 7, 1931 -50,2 C, the highest 22 July 1953 +37,2 C. the City is located at the intersection of forest-steppe and steppe natural zones.
The settlement that later became the city of Novosibirsk, was founded in 1893 as the future site of a railway bridge over the Ob river. During its existence it changes its name several times. First, the place where the future city was New village, after she became a New village, which was later named Alexander, in honor of St. Alexander Nevsky, the heavenly patron of Emperor Alexander III. Since 1895, it was renamed the village of Novo-Nikolayevskoye in honor of St. Nicholas the Wonderworker, the patron Saint of Emperor Nicholas II. And in 1903, the settlement received the status of town. In 1925, the city of Novo-Nikolaevsk (after the October revolution, began to write the Novonikolaevsk) was renamed to Novosibirsk.
The sights of Novosibirsk include the Opera and ballet Theatre, St. Nicholas chapel, Communal bridge, a railway bridge, monument to Marshal Pokryshkin and others. Новосибирск-город в России, административный центр Новосибирской области и Сибирского федерального округа, крупный промышленный, транспортный, научный и культурный центр, находится в 3303 километрах от Москвы. Город расположен на Приобском плато, прилегающих к долине реки Обь, недалеко от водохранилища, образованного плотиной Новосибирской ГЭС. Новосибирск-крупнейший город Сибири и самый крупный муниципалитет в России. Его население в 2006 году составляет 1 миллион 397 тысяч жителей. Крупнейший Новосибирский принадлежит третье место в России после Москвы и Санкт-Петербурга. Город занимает площадь около 500,кВ. км (50021 га). Новосибирск находится в Континентальной климатической зоне; среднегодовая температура воздуха +0.2 С. характерны большие колебания средней (38 C) и абсолютных (88 с) температурах. Средняя температура воздуха в январе -18,8 ° с, июля - +25 ° С. самая низкая температура была зафиксирована 7 января 1931 -50,2 C, самая высокая 22 июля 1953 года +37,2 Э. Город расположен на пересечении лесостепной и степной природных зон. Поселение, которое впоследствии ставший городом Новосибирском, был основан в 1893 году как будущего сайта железнодорожного моста через Обь. За время своего существования она меняет свое название несколько раз. Во-первых, место, где будущий город была новая деревня, после она стала новым поселка, который впоследствии назвали александровским, в честь св. Александра Невского, небесного покровителя Императора Александра III. С 1895 года его переименовали в поселок Ново-Николаевское (в честь святителя Николая Чудотворца, покровителя Императора Николая II. И в 1903 году поселок получил статус города. В 1925 году город Ново-Николаевск (после Октябрьской революции стали писать в Новониколаевске) был переименован в Новосибирск. Достопримечательности Новосибирска включает в театр оперы и балета, Никольская часовня, Коммунальный мост, Железнодорожный мост, памятник маршалу Покрышкину и другим.
The city is located at the Priobskoye plateau adjacent to the valley of the river Ob, near the reservoir formed by the dam of the Novosibirsk hydroelectric power station.
Novosibirsk is the largest city of Siberia and the largest municipality in Russia. Its population in 2006 is 1 million 397 thousand inhabitants. The largest Novosibirsk belongs to the third place in Russia after Moscow and St. Petersburg. The city covers an area of about 500,kV. km (50021 ha).
Novosibirsk lies in the continental climate zone; the average annual air temperature is +0.2 C. Characterized by large fluctuations average (38 C) and absolute (88 C) temperatures. The average air temperature in January -18,8 C, in July +25 C. the lowest temperature was recorded on January 7, 1931 -50,2 C, the highest 22 July 1953 +37,2 C. the City is located at the intersection of forest-steppe and steppe natural zones.
The settlement that later became the city of Novosibirsk, was founded in 1893 as the future site of a railway bridge over the Ob river. During its existence it changes its name several times. First, the place where the future city was New village, after she became a New village, which was later named Alexander, in honor of St. Alexander Nevsky, the heavenly patron of Emperor Alexander III. Since 1895, it was renamed the village of Novo-Nikolayevskoye in honor of St. Nicholas the Wonderworker, the patron Saint of Emperor Nicholas II. And in 1903, the settlement received the status of town. In 1925, the city of Novo-Nikolaevsk (after the October revolution, began to write the Novonikolaevsk) was renamed to Novosibirsk.
The sights of Novosibirsk include the Opera and ballet Theatre, St. Nicholas chapel, Communal bridge, a railway bridge, monument to Marshal Pokryshkin and others. Новосибирск-город в России, административный центр Новосибирской области и Сибирского федерального округа, крупный промышленный, транспортный, научный и культурный центр, находится в 3303 километрах от Москвы. Город расположен на Приобском плато, прилегающих к долине реки Обь, недалеко от водохранилища, образованного плотиной Новосибирской ГЭС. Новосибирск-крупнейший город Сибири и самый крупный муниципалитет в России. Его население в 2006 году составляет 1 миллион 397 тысяч жителей. Крупнейший Новосибирский принадлежит третье место в России после Москвы и Санкт-Петербурга. Город занимает площадь около 500,кВ. км (50021 га). Новосибирск находится в Континентальной климатической зоне; среднегодовая температура воздуха +0.2 С. характерны большие колебания средней (38 C) и абсолютных (88 с) температурах. Средняя температура воздуха в январе -18,8 ° с, июля - +25 ° С. самая низкая температура была зафиксирована 7 января 1931 -50,2 C, самая высокая 22 июля 1953 года +37,2 Э. Город расположен на пересечении лесостепной и степной природных зон. Поселение, которое впоследствии ставший городом Новосибирском, был основан в 1893 году как будущего сайта железнодорожного моста через Обь. За время своего существования она меняет свое название несколько раз. Во-первых, место, где будущий город была новая деревня, после она стала новым поселка, который впоследствии назвали александровским, в честь св. Александра Невского, небесного покровителя Императора Александра III. С 1895 года его переименовали в поселок Ново-Николаевское (в честь святителя Николая Чудотворца, покровителя Императора Николая II. И в 1903 году поселок получил статус города. В 1925 году город Ново-Николаевск (после Октябрьской революции стали писать в Новониколаевске) был переименован в Новосибирск. Достопримечательности Новосибирска включает в театр оперы и балета, Никольская часовня, Коммунальный мост, Железнодорожный мост, памятник маршалу Покрышкину и другим.