health and environment

Health Studies

Health and Environment

There are two meanings of the term greenhouse effect, the natural greenhouse effect that keeps the earth's climate warm and habitable and the man mad greenhouse effect, which is the enhancement of the earth's natural greenhouse effect by the addition of greenhouse gases from the burning of fossil fuels mainly petrol, coal, and natural gas. In order to understand how the greenhouse effect operates, people need to understand infrared radiation. Infrared (IR) radiation is just as important to the earth's weather and climate as sunlight is, for every bit of sunlight that the Earth receives, an equal amount of IR radiation must travel from the Earth back to outer space. Everything gives infrared radiation because this is weak, you can't see it like you can sunlight. Greenhouse gases trap some of the infrared radiation that escapes from the earth, making the Earth warmer this would otherwise be greenhouse gases which is like blanket for infrared radiation it keeps the lower layers of the atmosphere warmer, and the upper layers colder, than if the greenhouse gases were not there.

About 80-90% of the Earth's natural greenhouse effect is due to water vapours, a strong greenhouse gas the remainder is due to carbon dioxide, methane, and a few other minor gases.

It is the carbon dioxide concentration that is increasing, due to the burning of fossil fuels as well as from some rainforest burning fires, this is the man-made portion of the greenhouse effect, and it is believed by many scientists to be responsible for the global warming of the last 150 years. Weather-education 2007

Air pollution supplies people with air to breath which is essentional for people to live; the airs is 99.9% nitrogen, oxygen, water vapour and insert gases. Air pollution can even exist in houses and buildings and this can effect peoples health by chemicals in the air inside of buildings, there are different types of air pollution one type of air pollution is the release of particles into the air from burning fuels, such as diesel smoke. This type of pollution is also known as "black carbon" pollution. People suggest that by the fumes from people's cars, burning fuels at home such as wood, charcoal, and even barbeques can release soot into the air. There is also another type of air pollution which is the release of gases which can cause chemical reations to the air such as sulphur dioxide and carbon monoxide. Air pollution also can be effected inside people's homes by cooking, smoking so it is important to consider air pollution indoors and outdoors. Education els pollution 2009.

Air pollution varies which include natural pollution and man made pollution; natural pollution includes oxides of sulphur and nitrogen from volcanoes, oceans, lighting and forest fires, also pollen from plants, grasses and trees, natural pollution is around people in everyday life however this can dramatically be increased, for example after a volcano eruption or at the beginning of a growing season. Man made air pollution is more of a concern as it has a greater control over the astrosphere, which has a dramatic impact on the air quality, man-made air pollution, can have a detrimental impact air quality. The most common source of man-made air pollution outdoors is the burning of fuels, such as coal, oil and gas, in power stations, industries, homes and car fumes. Depending on the nature of the fuel and the type of combustion process, pollutants released into the atmosphere from the burning of fuels include nitrogen oxides, sulphur dioxide, carbon monoxide, particulate matter, lead and volatile organic compounds VOCs. These pollutants are all called primary pollutants because they have direct sources. By contrast, there are no direct ground-level emissions of ozone to the atmosphere. Most ozone in the atmosphere near ground level is formed indirectly by the action of sunlight on VOCs in the presence of nitrogen dioxide, although a small amount comes from high up in the atmosphere where it forms naturally in the ozone layer. This can cause heath issues for people depending on the concentration in the air, and the sensitivity of the individual. ace.mmu.ac.uk 2009.

Air pollution in the UK has been a recognised problem from as far back as the 13th century, when the use of coal in London was prohibited on the ground that it was causing health problems. During the Industrial Revolution, smog pollution which is caused by warm weather in urban areas became a significant problem, due to the industrial and domestic burning of coal. But in today's sociaty both urban and rural smog pollution results from the build up of secondary photochemical pollutants such as ozone. Air quality generally has improved during the last 100 years, legislative controls and the introduction of further low emission technology will help to reduce air pollution in the UK. Whilst industrial nitrogen oxides emissions have fallen in the last 15 years, emissions from road transport have grown significantly, because of the increase in the number of cars on the road lots more younger people have cars now but if you go back 50 years there were less people with cars , although in the last few years the introduction of clean fuel technology has helped to reduce emissions. Emissions of particulates, carbon monoxide and volatile organic compounds VOCs from road transport have increased, although as for nitrogen oxides, these emissions are now starting to fall. mmu.ac.uk 2000 In the UK today there is over 28,483,961 cars on the road which is affecting air pollution there are also over 40 airports in the UK which is far too many for the size of the UK and it is affecting the air we breathe dramatically. Cars are the leading cause to UK air pollution problem. Cars also release toxic emissions that damage our environment, hurting our environment by adding to the greenhouse effect, damaging air quality, and decreasing the ozone. Not to mention the growing smog problems, disasters done with landfill and the effects done to our water supply. Which all are connected with the greenhouse effect, ozone depletion, and air quality? Even though today's ozone is stable, ultraviolet rays are under control, and the air we breathe is still healthy. In the near future these luxuries will not be available if we continue to drive cars of today, which will affect the way people live their lives on a regular basis. Cars damage our environment by the emissions released from the combustion system of a car. Certain emissions effect out environment and do damage to the greenhouse effect.

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