Industry and motor vehicle exhaust are the number one pollutants. Heavy metals, nitrates and plastic are toxins responsible for pollution. While water pollution is caused by oil spill, acid rain, urban runoff; air pollution is caused by various gases and toxins released by industries and factories and burning of fossil fuels; soil pollution is majorly caused by industrial waste that deprives soil from essential nutrients. FIND OUT 5 WAYS HOW TO STOP POLLUTION. 2. Global Warming: Climate changes like global warming is the result of human practices like emission of Greenhouse gases. Global warming leads to rising temperatures of the oceans and the earth surface causing melting of polar ice caps, rise in sea levels and also flash floods, excessive snow or desertification. FIND OUT 5 WAYS HOW TO STOP GLOBAL WARMING. 3. Overpopulation: The population of the planet is reaching unsustainable levels as it faces shortage of resources like water, fuel and food
Robert Angus Smith, in 1852. In that year, he discovered the relationship between acid rain and atmospheric pollution in Manchester, England. Although it was discovered in the 1800s, acid deposition did not gain significant public attention until the 1960s and the term acid rain was coined in 1972. Public attention further increased in the 1970s when the New York Times published reports about problems occurring in the Hubbard Brook Experimental Forest in New Hampshire. Effects of Acid Rain Today there are several important impacts of acid deposition on both natural and man-made environments. Aquatic settings are the most clearly impacted by acid deposition though because acidic precipitation falls directly into them. Both dry and wet deposition also runs off of forests, fields, and roads and flows into lakes, rivers, and streams. As this acidic liquid flows into larger bodies of water, it is diluted but over time, acids can
4.04.4 Harmful to adult fish of many types which have not been progressively acclimated to low pH 3.53.9 Lethal to salmonids, although acclimated roach can survive for longer 3.03.4 Most fish are killed within hours at these levels Environmental effects Very obvious environmental effect of acid rain is the loss of fish in acid sensitive lakes and streams. Loads of fishes are not able to survive in acidic water. There are 2 ways acid rain effects lakes and streams: chronic and episodic. The first one is long-term process and this acidification is result from years of acidic rainfall. Episodic, on the other hand, is rapid change sudden jump in the acidity of water. Acid deposition may influence forest vegetation and soils. It removes soil nutrients such as calcium and magnesium from soils in high elevation forests
and atmospheric pollution in Manchester, England Though acidic rain was discovered in 1852, it was not until the late 1960s that scientists began widely observing and studying the phenomenon The term "acid rain" was generated in 1972 Canadian Harold Harvey was among the first to research a "dead" lake Public awareness of acid rain in the U.S increased in the 1970s after the New York Times promulgated reports from the Hubbard Brook Experimental Forest in New Hampshire of the myriad deleterious environmental effects demonstrated to result from it Occasional pH readings in rain and fog water of well below 2.4 have been reported in industrialized areas Industrial acid rain is a substantial problem in Europe, China, Russia and areas down- wind from them These areas all burn sulfur-containing coal to generate heat and electricity The problem of acid rain not only has increased with population and industrial growth, but has become more widespread
All of the plants are adapted to sweeping winds and disturbances of the soil. Many plants grow in a low, tight clump - this growth habit helps protect them from the cold and snow. They can carry out photosynthesis at low temperatures and low light intensities. The growing season is short and most plants reproduce by budding and division rather than sexually by flowering. There are no deep root systems in the vegetation of the tundra; however, there are a wide variety of plants that are able to resist the cold climate. The fauna is also diverse. Animals such as mammals and birds also have additional insulation from fat. Many animals hibernate during the winter because food is not abundant. Another alternative is to migrate south in the winter, like birds do. Reptiles and amphibians are few or absent because of the extremely cold temperatures. Because of constant migration, the population continually oscillates.
air that we breathe, becomes dangerous to our health. The ozone layer around the Earth, there is a special type of oxygen called ,,ozone". Ozone is important because it stops ultraviolett radiation from the sun. Many aerosol sprays and factories destroy ozone and they have made a very big hole in the ozone layer. This means that too much ultraviolet radiation now enters the Earth. This is very dangerous because it can cause cancer. Poisonous chemicals also cause acid rain, that destroyes plants, rivers, lakes and buildings. Acid rain can travel thousands of miles, so pollution in one country can become acid rain for another country. So how to avoid the worst? Lets talk about cars, which are the main means of transport in our everyday life, they are useful and take us to the place, where we want to go. But lets be honest, they have also negative aspects. Like heavy traffic in the morning, while you are
rain and atmospheric pollution in Manchester, England.[4] Though acidic rain was discovered in 1852, it was not until the late 1960s that scientists began widely observing and studying the phenomenon. The term "acid rain" was generated in 1972. [5] Canadian Harold Harvey was among the first to research a "dead" lake. Public awareness of acid rain in the U.S increased in the 1970s after the New York Times promulgated reports from the Hubbard Brook Experimental Forest in New Hampshire of the myriad deleterious environmental effects demonstrated to result from it. Occasional pH readings in rain and fog water of well below 2.4 have been reported in industrialized areas.[2] Industrial acid rain is a substantial problem in Europe, China,[8][9] Russia and areas down- wind from them. These areas all burn sulfur-containing coal to generate heat and electricity.[10] The problem of acid rain not only has increased with population and industrial growth, but has become
2. Cultural practices These factors play a great role in determining not only the number and type of organism but also their activities. Variations in any one or more of these factors may lead to the changes in the activity of the organisms which ultimately affect the soil fertility level. Natural conditions Extreme environments such as high-altitude and highlatitude ecosystems are very sensitive to environmental changes. Global warming is hypothesised to alter both above- and below ground processes affecting the soil ecosystem (Asher et al. 2012). As an example, Asher et al. (2012) further proved in their research on humus creation that thermal conditions (due to differences in altitude and exposure) and consequently the climate influence soil microflora considerably. Humus being defined as an organic residue in the soil resulting from decomposition of plant and animal residues in soil, or it is the highly complex organic
ENVIRONMENTAL PROBLEM The term acid rain refers to what scientists call acid deposition. It is caused by airborne acidic pollutants and has highly destructive results. Scientists first discovered acid rain in 1852, when the English chemist Robert Agnus invented the term. From then until now, acid rain has been an issue of intense debate among scientists and policy makers. Acid rain, one of the most important environmental problems of all, cannot be seen. The invisible gases that cause acid rain usually come from automobiles or coal-burning power plants. Acid rain moves easily, affecting locations far beyond those that let out the pollution. As a result, this global pollution issue causes great debates between countries that fight over polluting each other's environments. For years, science studied the true causes of acid rain. Some scientists concluded that human production was primarily responsible, while others cited natural causes as well
2. Where is prairie, pampas, steppe, and veldt situated? EurasiaSteppe, North America-Prairie, South AmericaPampa, South AfricaVeldt 3. Using the climate diagram describe the climate of the region. Temperate deciduous forest -Well-defined seasons with a distinct winter characterize this forest biome. Moderate climate and a growing season of 140-200 days during 4-6 frost-free months distinguish temperate forests. Temperature varies from -15° C to 25° C. Precipitation (750-1500 mm) is distributed evenly throughout the year. Temperate grassland- Semiarid, continental climates of the middle latitudes typically have between 25 cm and 50 cm of precipitation a year. Much of this falls as snow, serving as reservoir of moisture for the beginning of the growing season
the majority of pollutants released into the air. Air pollution has been a problem throughout history. Even in Ancient Romepeople complained about smoke put into the atmosphere. The effects of air pollution are diverse and numerous. Air pollution can have serious consequences for the health of human beings, and also severely affects natural ecosystems. Because it is located in the atmosphere, air pollution is able to travel easily. As a result, air pollution is a global problem and has been the subject of global cooperation and conflict. Some areas now suffer more than others from air pollution. Cities with large numbers of automobiles or those that use great quantities of coal often suffer most severely from problems of air pollution. CAUSES There are many different chemical substances that contribute to air pollution. These chemicals come from a variety of sources. Among the many types of air pollutants are nitrogen oxides, carbon monoxides, and organic
environments they are today. Rainforests represent a store of living and breathing renewable natural resources that for eons, by virtue of their richness in both animal and plant species, have contributed a wealth of resources for the survival and well-being of humankind. These resources have included basic food supplies, clothing, shelter, fuel, spices, industrial raw materials, and medicine for all those who have lived in the majesty of the forest. However, the inner dynamics of a tropical rainforest is an intricate and fragile system. Everything is so interdependent that upsetting one part can lead to unknown damage or even destruction of the whole. Sadly, it has taken only a century of human intervention to destroy what nature designed to last forever. The scale of human pressures on ecosystems everywhere has increased enormously in the last few decades. Since 1980 the global economy has tripled in size and the world population has
Her friend, Les, didn't like to use any energy at all. He walked to school, read books instead of watching TV, played the trumpet instead of Guitar Hero, and turned off the lights anytime he left a room. Then one evening, there was a power outage. The lights went out, the TV turned off, and everything became very quiet. Jules became very upset, and quite scared. She couldn't do anything that she wanted to do. She didn't think she could survive. Meanwhile, Les didn't seem to mind at all. He was able to light a few candles and he could still read his books, practice his trumpet, and hang out and play cards with his family. The two friends then realized that there was a big difference in their lifestyles and the amount of energy they used. So Jules decided she should figure out how much energy Les used and then compare her energy consumption to how much she really needed. To do this, they figured out how much energy Jules was using for entertainment, light, heating and
what is currently considered waste into energy. As of 2005, nuclear power provided 6.3% of the world's energy and 15% of the world's electricity, with the U.S., France, and Japan together accounting for 56.5% of nuclear generated electricity. As of 2007, the IAEA reported there are 439 nuclear power reactors in operation in the world, operating in 31 countries. In 2007, nuclear power´s share of global electricity generation dropped to 14%. According to the International Atomic Energy Agency, the main reason for this was an earthquake in western Japan on 16 July 2007, which shut down all seven reactors at the Kashiwazaki-Kariwa Nuclear Power Plant. There were also several other reductions and "unusual outages" experienced in Korea and Germany. Also, increases in the load factor for the current fleet of reactors appear to have plateaued.
As the bud stage ends, the stem(tüvi) stiffens(kangestuma, jäigastuma) and the blooming stage is reached. Sunflowers in the blooming stage are not heliotropic anymore. The stem has frozen, typically in an eastward orientation. The stem and leaves lose their green color. The wild sunflower typically does not turn toward the sun; its flowering heads may face many directions when mature. However, the leaves typically exhibit some heliotropism. Cultivation and uses A sunflower farm near Mysore, India. Sunflower heads solds as snacks in China. Sunflowers are native(pärit) to the Americas. The earliest known examples of a fully domesticated sunflower were found at the Olmec site of San Andrés dating some time before 2500 B.C.[1] The Incas used the sunflower as an image of their sun god. Gold images of the flower, as well as seeds, were taken back to Europe early in the 16th century. The Giant sunflower (Hlianthus giganteus) is native to Connecticut
..........................................16 3. Conclusion............................................................................................................ ....18 4. Sources............................................................................................................... .......19 Renewable energy Renewable energy is energy generated from natural resources--such as , wind, rain, tides and geothermal heat--which are renewable (naturally replenished). In 2006, about 18% of global final energy consumption came from renewables, with 13% coming from traditional biomass, such as wood-burning. Hydroelectricity was the next largest renewable source, providing 3% (15% of global electricity generation),followed by solar hot water/heating, which contributed 1.3%. Modern technologies, such as geothermal energy, wind power, solar power, and ocean energy together provided some 0.8% of final energy consumption.
.................................. Factfile Australia is the only country in the worlf that fills the whole continent. The continent is also called Australia, if you want to make clear that you are speaking about the country you may call it by its official name: Commonwealth of Australia. Australia is the smallest continent, but one of the largest countries in the world. Its area is about 7,6 million sq kilometers. Its population is about 20,0 million and most of the people live in bigger cities: Sydney (4.2 million), Melbourne (3.7 million), Brisbane (2 million) and in Canberra, Which is also the capital of Australia. National language in Australia is english and the monetary unit is Australian dollar. Australia is divided into 6 states and 2 territories. Symbols Australia has a British Union flag. It is red, white and blue. Five small stars represent the constellation Southern cross. The big star represents country's states and territories
It has been estimated that the world food production needs to double and meat production increase by 85% by 2050 to fulfill projected demand by population (Karp, 2011). In the recent decades, the food consumption in the most populous counties has shifted from grain-based diets to meat and dairy diets. Meat production requires times more biomass in the form of animal feed and that puts further pressures on natural resources. As food production is very energy intensive, it is closely linked to global energy consumption. Global fuel consumption has grown 50-fold since the end of the 20th century and it is projected to increase by another 55% by 2030 (Umbach, 2010). That is the reason why new resources for fuel are being sought and biofuels receive subsidies, and investment in development. In addition, transport sector is one of the largest primary energy consumers, and as the travel and car ownership is predicted to increase, more fuel needs to be dedicated to transport (Karp, 2011
There are declining amounts of these benchmark oils being produced each year, so other oils are more commonly what is actually delivered. While the reference price may be for West Texas Intermediate delivered at Cushing, the actual oil being traded may be a discounted Canadian heavy oil delivered at Hardisty, Alberta, and for a Brent Blend delivered at Shetland, it may be a Russian Export Blend delivered at the port of Primorsk. Petroleum industry The petroleum industry is involved in the global processes of exploration, extraction, refining, transporting (often with oil tankers and pipelines), and marketing petroleum products. The largest volume products of the industry are fuel oil and petrol. Petroleum is also the raw material for many chemical products, including pharmaceuticals, solvents, fertilizers, pesticides, and plastics. The industry is usually divided into three major components: upstream, midstream and downstream. Midstream operations are
1. Key features for all studied biomes. Tundra The main seasons are winter and summer. The tundra is the world's coldest and driest biomes. The average annual temperature is -28° C. Nights can last for weeks when the sun barely rises during some months in the winter, and the temperature can drop to -70° C. During the summer the sun shines almost 24 hours a day. Summer are usually warm. Average summer temperatures range from 3° to 16°C. TaigaTaiga is the Russian word for forest and is the largest biome in the world. It stretches over Eurasia and North America. The taiga is located near the top of the world, just below the tundra biome. The winters in the taiga are very cold with only snowfall. The summers are warm, rainy, and humid. Some of the animals in the taiga hibernate in the winter, some fly south if they can, while some just cooperate with the environment. GrasslandsGrassland biomes can be found in the middle latitudes
15. Once the area was known for ............. in spring, now we come across ................ rivers there. (üleujutused, kuivanud) III Make up dialogues/discussions using the following words and expressions a) campaigners for green living appalling problems, reverse, consumption, contamination, depletion of ozone layer, artificial fertilizers, pesticides, recycle, local/regional/global problems, destruction, prediction, depletion, remorseless b) farmers in the Amazon region acid rain, organic farming, poverty, famine, floods, fertile land, fell trees, dry up, clog up, growth of population, disaster, beyond our control, protection, eruption, reduction c) owners of a paper factory in Estonia waste chemicals, dump industrial waste, fuel/electricity consumption, energy-efficient, beyond our control, biodegradable waste, landfill, soot, exhaust fumes, reusable materials, emission, penetration, pollution, inadmissibly high IV Explain the meaning of the words
With easy access to energy, the number of warm meals may increase. Whole grain and beans may be cooked longer, increasing their digestibility, especially for children. Water may be boiled more regularly, thus reducing waterborne diseases. Biogas plants also improve health conditions in the homes: Since biogas burns clean, homes do not fill with smoke and ash. Women and children experience less bronchial problems and can expect to live longer. Homes are also more hygienic. Dung cakes are no longer stored in the homes. Cooking with gas takes less time than with wood or charcoal or any other commonly used fuel. It is easier to cook with gas stove. Economical Estimating an average per capita consumption of 3 kg of wood per day for energy (cooking, heating and boiling water) in rural areas, the daily per capita demand of energy equals about 13 kWh which could be covered by about 2 m3 of biogas
Global Warming One of the biggest issues our planet and its inhabitants are facing nowadays is global warming. Global warming, also often referred to as the greenhouse effect, has not always been a problem. However, over the last centuries, since the Industrial Revolution things have changed. Polar regions are melting, species are dying, climate zones are shifting, migration patterns for animals such as polar bears and birds are being disrupted our world as we know it is changing. Some scientists believe that the climate will reach a tipping point, a point
Savanna A savanna is a grassland ecosystem with scattered trees or shrubs. In savannas trees are small or widely spaced so that the canopy does not close. It is often believed that savannas are characterized by widely spaced, scattered trees, however in many savanna communities tree densities are higher and trees are more regularly spaced than in forest communities. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of C4 grasses. Savannas are also characterised by seasonal water availability, with the majority of rainfall being confined to one season of the year. Savannas can be associated with several types of biomes. Savannas are frequently seen as a transitional zone, occurring between forest and desert or prairie.
Air pollution is problem all over the world. Through some pollution comes from these natural sources, most pollution is the result of human activity. The biggest causes are the operation of fossil fuel- burning power plants and automobiles that combust fuel. Combined, these two sources are responsible for about 90% of all air pollution in the United States. All kind of pollutions can lead us to serious health problems. For example, air pollution is increasingly being cited as the main cause of lung conditions such as asthma - twice as many people suffer from asthma today compared to 20 years ago. Every year, 3.2m Europeans are diagnosed with cancer - the most common cause of death after heart disease. Most widespread are cancers of the lungs, breast and colon. Diseases such as bronchitis, lung cancer and heart diseases may all eventually appear in people exposed to air pollution. When the wind blows, then it carries the pollution with him. Futhermore, the rain reduces the
This creates demand for increased production and the development of new products, which also means more and better-paying jobs. Also like the United States, advertising has a major impact on Canadian consumer spending. Television is the number-one form of advertising in Canada. The nation's infrastructure is excellent and most of its factories and manufacturing plants are modern. In fact, Canada's transportation network is ranked as the best in the world by the World Economic Forum's Global Competitiveness Report. Canada has a variety of natural resources, including petroleum and natural gas, and a variety of metals and minerals. Over the past decade, Canada has also emerged as one of the leading nations in the high-tech and computer industry. Most of this growth has occurred in central Canada, mainly Ontario and Quebec, and is responsible for the increased migration of people to these areas. Much of the economic growth in Canada today is fueled by small-to mediumsized companies
The most common methods are by burning coal, building dams, or using nuclear power. However, many people think that nuclear power is dangerous, and when you consider the experience of Chernobyl in the Ukraine over 20 years ago, you can see why. Countries such as France, however, get about 80% of their electricity from nuclear power plants, and the pro-nuclear scientists argue that it is actually much clearer than burning fossil fuels, which contributes to global warming. Others argue that it is better to get electricity from sustainable resources, such as the wind, the sea, and the sun. Although this sounds like a sensible idea, they are not reliable enough to malntain a constant supply of power. For instance, you cannot produce solar energy at night. Basically, we need a source of energy that will not run out; if it cannot be hydroelectricity or coal-fired energy, it will have to be nuclear
change soil pH; hold more water; release more minerals or nutrients / increase N content or fix N / hold ions; form microhabitat / reduce exposure / provide shelter / reduce erosion; max 3 (c) any two from following: grazing; burning; mowing / application of fertilizer / application of selective herbicide; exposure to wind; grass able to continue to grow (linked to a statement above); 2 (d) increases; plants at later stages are large / plants in early stages are small; trees / shrubs. are woody, appear later in succession; 2 [9] 15. max 1 mark from following: 1 economic definition of sustainable; e.g. similar quantities of timber
Australia is 1,800 miles from the mainland of Asia and almost half way round the world from Europe. More than 6,000 miles of ocean separate in from the America. Australia is the only continent except for Antarctica that lies all south of the equator. The natural zones of Australia are very various. There are deserts, semi deserts, grasslands, savannas, bushlands and rainforests. The wet forests occupy the narrow region in the east. Most of the animals, birds and insects live in that region, because there is enough food. The savannas which are grasslands with some trees are mostly in the west. Farther west are the bushlands. The real deserts occupy the centre of the Western Plateau. In the very south west there are thin forests of evergreens trees. Australia is the driest inhabited continent, the flattest, and has the oldest and least fertile soils. Only the south-east and south-west corners of the continent have a temperate climate. The
in mortality rates, an increase in immigration, or an unsustainable biome and depletion of resources • Human population has been rising continuously since the end of the Black Death, around the year 1350 • The most significant increase has been since the 1950s, mainly due to medical advancements and increases in agricultural productivity • The recent rapid increase in human population over the past three centuries has raised concerns that the planet may not be able to sustain present or future numbers of inhabitants. Loss of Fresh Water • Most of the freshwater resources are either unreachable or too polluted, leaving less than 1% of the world's freshwater, or about 0.003% of all water on Earth, readily accessible for direct human use. • According to the Global Outlook for Water Resources to the Year 2025, it is estimated that by 2025, more than half of the world population will be facing water-based vulnerability and human demand for water
• Oil palms are grown in tropics – Asia, Africa, Latin America • Large areas of tropical forests and other ecosystems with high conservation values have been cleared to make room for vast monoculture of oil palm plantations. This clearing has destroyed critical habitat for many endangered species—including rhinos, elephants, tigers and orang-utans – the biggest victims • Burning forests to make room for the crop is a major source of greenhouse gas emissions. Intensive cultivation methods result in soil pollution and erosion and water contamination Impact on inhabitants • Oil palm plantations are a threat to people living in rainforests, destroying their livelihoods and culture • Small farmers and indigenous people are being forced off their ancestral land • The palm oil industry is linked to major human rights violations, including child labour in remote areas of Indonesia and Malaysia. Children are made to carry
Kool Tallinn, 2009 How can we make our planet a safer place to live Essay Nimi Klass Juhendaja notice the cars. But to put this in pracitce, public Is our problems and transport should be improved the buses planet a safe therefore we should be cleaner, they should drive more place to live can't fight frequently and there must be buses driving for animals, them. This to more destinations. This way people would fish, birds, way the air is understand that this is an easier, faster and a ourselves or being more cheaper way to get where ever you want. plants? Many and more You do not have to worry about parking and people think it polluted and gas prizes
Of all of the dioxins and furans, one, 2,3,7,8tetrachloropdibenzo dioxin (2,3,7,8 TCDD) is considered the most toxic. · PCBs were produced commercially in large quantities until production was stopped in 1977. . Emission sources Dioxins are mainly produced as unwanted byproducts of industrial processes and there is no intentional production or use. They can also to a small extent be formed naturally in forest fires or volcanic activity. Examples of activities resulting in dioxin emissions are waste incineration, burning fuels (wood, coal or oil), chlorine bleaching of pulp and paper and chlorinated pesticides manufacturing. Burning of many materials containing chlorine, such as plastics and wood treated with pentachlorophenol also produce dioxins. According to a study in the context of the Stockholm Convention, the main sources for emissions of dioxins to air in EU25 are
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