The pollutants are related to population growth as these increase, the pollution they cause is greater. Pollutants because of their consistency, are classified in solids, liquids and gases.
agents are made of solid waste in its various presentations. Cause pollution of soil, air and water. Soil because it produces microorganisms and vermin, the air because it produces bad odors and toxic gases and water because the dirty and not usable.
liquid agents are formed by sewage, industrial waste, spills of petroleum fuels which damage the water mainly from rivers, lakes, seas and oceans, and thereby cause the death of various species.
gaseous agents are formed by combustion of fuel (nitrogen oxide and sulfur) and by burning fuels such as gas (carbon monoxide), garbage and wastes of plants and animals.
all pollutants from a specific source can cause respiratory and digestive diseases. It is necessary for man to become aware of the problem.
is called pollution to the presence in the environment of any agent (physical, chemical or biological) or a combination of several drugs in places, forms and concentrations as they are or may be harmful to health, safety or welfare of the population, or may be harmful to plant or animal life, or prevent the normal use of the property and places of recreation and enjoyment of them. Environmental pollution is also incorporated into the receiving bodies of solid, liquid or gaseous, or mixtures thereof, provided that adversely alter the natural conditions of the same, or that may affect health, hygiene or welfare.
EFFECTS Environmental health experts and cardiologists at the University of Southern California, just demonstrated for the first time what until now was just a suspicion of atmospheric pollution in large cities affect cardiovascular health. Research has found a direct relationship between increased air pollutant particles and the city wall thickening of the arteries (the "intimate media "), which is a proven indicator of atherosclerosis.
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persistent defect polluting the atmosphere, in a silent process of years, leading eventually to the development of acute cardiovascular diseases such as heart attacks. As you breathe ambient particles with a diameter less than 2.5 micrometers, enter the smaller airways and then irritate the artery walls. The researchers found that for every increase of 10 micrograms per cubic meter of the particles, altering the wall intima-media of the arteries increased by 5.9%. The smoke snuff and that usually comes from the exhaust of cars produced the same amount of these particles. Stringent clean air standards contribute to better health with large-scale effects. increasing our planet. It endangers the lives of plants, animals and people. Generates physical damage to individuals. Becomes a non consumable water. In the contaminated soil is not possible to plant.
Climate change generates consequences in all aspects of life, especially in the development and survival of animal species that inhabit the world.
To begin with, their habitat is changed drastically, and makes that the functions that take place in spring and germination, reproduction and migration are affected in due course to the advancement of high temperatures.
The consequences of these factors impact differently among different species. The melting and melting icecaps leaves no room for species from cold and low temperatures in other areas and the lack of water makes it impossible for some nesting birds. The confusion between habitat reduction and makes each species seek shelter in unusual places for their properties, often crossing with enemies that reduce the food source by decreasing the population.
Marine species been adversely affected by increased water temperature and increased acidification in the oceans, fish disappear without a chance to reproduce, which in turn are eaten by other species that are left without livelihoods.
erosion, deforestation, pollution, global warming and many other factors are driving many species to the brink of extinction, which affected their habitats, food sources, and population development
The air is shared by all living things. When the air is polluted because of a factory in Asia, a fire in Australia, a dust storm in Africa, or car emissions in North America, sharing continues despite these chemicals and particles have harmful effects.
Scientists have established many of the local effects of air pollution. We know, for example, that adversely affects human health, and causes coughing, eye irritations, breathing problems and even death. We know that the clouds of polluted air or smog reduced visibility and that acid rain damages of chemical properties, contaminated water sources, and can damage forests, wildlife and agriculture.
But what are the regional and global impacts of air pollution?. Through many campaigns such as MILAGRO field, scientists are tracking the movements of pollution on regional and global. His goal is to determine the movement of air pollution and its impact on climate and atmospheric composition at the local, regional and global.
air pollution produced by people and their effects, are an example of "Tragedy of the Commons" - a concept that states that any resource open to all will eventually be destroyed. Although people are creating lots of air pollution, the answer depends on what people do to address this problem. Much has been done to improve air quality in recent decades, but there is still a long way to go.
AIR POLLUTION AND CLIMATE CHANGE
Air pollution affects the Earth's climate. However, Not all types of pollutants have the same effect. There are many types of air pollution. Some make our planet to warm more quickly. Others make the slow rate of global warming through cooling time. Read on to learn more about the pollutants that cause global warming and leading to cooling.
Some pollutants contribute to further global warming.
includes air pollution gases such as carbon dioxide, methane and nitrous oxide. These are greenhouse gases. Greenhouse gases are not a large percentage of Earth's atmosphere, but even in small quantities have a profound effect on global climate. Greenhouse gases are primarily responsible for the increase of about 0.6 degrees Celsius (1 º Fahrenheit) in temperature of the global surface air over the past century, and scientists predict that in future there will be greater warming.
Greenhouse gases cause global warming by trapping solar radiation in the atmosphere. Greenhouse gases are part nartural of the Earth's atmosphere, but in the last 150 years the amount of greenhouse gases in our atmosphere have increased significantly due to increase in the amount of exhaust gases from cars, and contaminants released by the factory chimneys and power plants.
Some air pollutants originate from a temporary cooling.
cars, trucks and fireplaces release tiny particles into the atmosphere. These tiny particles are known by the name of aerosols, and vary in size from 10 nanometers to more than 100 micrometers in diameter. These may be composed of various substances such as mineral dust, sulfates, sea salt, or coal. Some of these small particles block part of the amount of solar radiation reaching the Earth, which causes cooling. These particles can occur naturally in the atmosphere, for example, after the eruption of volcanoes or the smoke from forest fires, but polluting the air released by burning fossil fuels also contribute to small particles into the atmosphere. greenhouse gases linger in the air for years and warming. Computer models indicate that sulfates and other particles give rise to a cooling equivalent to approximately half of the warming caused by greenhouse gases.
melting icecaps
The snow and ice at both poles decrease due to calentamiento global del planeta, según ponen de manifiesto las diferentes investigaciones llevadas a cabo en ambas regiones en el marco de la campaña del Año Polar Internacional (API) 2007-2009.
Así, el avance de conclusiones de este proyecto conjunto de la Organización Meteorológica Mundial (OMM) y el Consejo Internacional para la Ciencia (ICSU) da nuevas pruebas de los efectos del cambio climático en el mundo.
El documento 'Estado de la Investigación Polar', hecho público hoy, resalta por tanto que el deshielo afecta a la vida humana, animal y vegetal tanto en las zonas del Ártico como en las del Antártico, así como a la circulación oceánica and global atmospheric.
The API, which ends Sunday, has spanned over two years within which there were more than 160 scientific projects with researchers from over 60 countries. He has also received international financial support of approximately 936.4 million euros.
"New evidence resulting from polar research will strengthen the scientific base that will be based on future activities," he adds in the statement the Secretary-General of WMO, Michel Jarraud.
CHANGES IN THE SEA AND THE ATMOSPHERE
Specifically, research API shows that the ice sheets of Greenland and Antarctica are losing mass, contributing to rising sea level. "The warming over Antarctica is much more widespread than thought before the campaign," notes the document.
On the other hand, other studies provide evidence to confirm that the level of warming in the Southern Ocean is above normal, which "could affect ocean circulation."
earth's atmosphere also suffers the consequences of warming. According to the report, there are large pools of carbon stored as methane (a greenhouse gas more potent than CO2) in the permafrost. The thawing of permafrost threatens to destabilize the methane and send it to the atmosphere.
In this field, work has found new connections between ozone concentrations over Antarctica and the wind and storm conditions in the Southern Ocean, information that will improve predictions of climate and ozone depletion, according to experts .
addition, researchers have found that North Atlantic storms are the main sources of heat and humidity of the polar regions, and argue that understanding these mechanisms will improve predictions of the path and intensity of storms.
CHANGES IN ANIMALS AND PLANTS
In the Arctic, researchers found that in summer the minimum extent of sea ice reached the lowest level of the last 30 years. Also recorded a rate "unprecedented" drift ice in the Arctic. They also found that this level of warming changed the vegetation, which affected the grazing animals and hunting.
Regarding biodiversity, the studies found in the Southern Ocean a variety "rich, colorful and complex" of life. According to reveal some species migrate to the poles in response to warming, while others show "interesting evolutionary trends, such as octopuses that come from ancestral species.
API
Other projects focused on social and humanitarian issues with indigenous communities in areas to address food safety issues, pollution and health, as well as creating networks of community surveillance. 
"The work begun by the API should continue," said Michel Jarraud. For its part, the president of ICSU, Catherine Bréchignac adds that these studies should help scientists to "understand and predict" the polar shifts and global events "right now critical. "
Finally, the paper recommends a series of priorities to ensure that society is better informed about pole shifts, the likely evolution and global consequences. To this end, WMO and ICSU held in 2010 in Oslo (Norway a) a scientific conference on the findings of the International Polar Year
