**13. Conclusion**

Lack of fossil fuel conservation affects us both through increasing energy prices, and a faster depletion of the fossil fuel reserves meant for future generations. Although popular perception expects a sudden depletion of oil, reduced oil consumption at high prices is likely to continue for many decades, or even a century. Over the next few decades, coal is expected to replace gas and oil in producing electricity. The transportation industry, especially automobiles, which are heavily dependent on liquid fuel today are unsustainable, and are expected to decline in numbers. Renewable energy and biofuels can not compare with the ease and convenience of fossil fuel, which is a great incentive to fossil fuel consumption. Fossil fuel oil is the only feasible source of raw materials for the chemical industry. The status conveyed by larger automobiles, and their safety in collisions with smaller cars, has contributed to a "size race" for bigger cars by consumers. Modern consumer lifestyles with air-coolers, large automobiles, and generous consumption of consumer equipment needlessly consume fossil fuel, and are unsustainable in the long run. The increased carbon dioxide in the atmosphere from fossil fuel, may actually have contributed to more dense forestry and vegetation in the world. On the other hand, pollutants and toxins (not global warming or CO2) are likely to be the cause for the alarming decline in marine life today. The alarm regarding global warming causing sea water encroaching into river deltas is mostly unfounded, as there will be a shift in the dynamic equilibrium of the river, land, and sea. This will cause faster silt deposition, causing a rise in land levels, and continued addition of coastal land.

#### **14. References**


rise of sea level will shift the land-river-sea equilibrium, resulting in faster deposition of silt in and around the rivers. This will cause a rise of the land elevations of the river delta, that will at least match the rise of sea levels. This implies that the coastal land addition of river deltas will continue at their present rates over the next few years. Modern concerns of coastal land inundation is therefore not applicable to river deltas, as a rise of sea will cause land levels

Lack of fossil fuel conservation affects us both through increasing energy prices, and a faster depletion of the fossil fuel reserves meant for future generations. Although popular perception expects a sudden depletion of oil, reduced oil consumption at high prices is likely to continue for many decades, or even a century. Over the next few decades, coal is expected to replace gas and oil in producing electricity. The transportation industry, especially automobiles, which are heavily dependent on liquid fuel today are unsustainable, and are expected to decline in numbers. Renewable energy and biofuels can not compare with the ease and convenience of fossil fuel, which is a great incentive to fossil fuel consumption. Fossil fuel oil is the only feasible source of raw materials for the chemical industry. The status conveyed by larger automobiles, and their safety in collisions with smaller cars, has contributed to a "size race" for bigger cars by consumers. Modern consumer lifestyles with air-coolers, large automobiles, and generous consumption of consumer equipment needlessly consume fossil fuel, and are unsustainable in the long run. The increased carbon dioxide in the atmosphere from fossil fuel, may actually have contributed to more dense forestry and vegetation in the world. On the other hand, pollutants and toxins (not global warming or CO2) are likely to be the cause for the alarming decline in marine life today. The alarm regarding global warming causing sea water encroaching into river deltas is mostly unfounded, as there will be a shift in the dynamic equilibrium of the river, land, and sea. This will cause faster silt deposition, causing a rise in

American Council for an Energy-Efficient Economy, 529 14th Street, Suite 600,

B. Howartha, Brent M. Haddadb, Bruce Paton The economics of energy efficiency: insights

BP Statistical Review of World Energy, June 2011, www.bp.com, Accessed October 18,

Corinna Fischer, Feedback on household electricity consumption: a tool for saving

E. Marvin, Consumers' Attitudes Toward Energy Conservation, Journal of Social Issues,

E. Scott Geller, Evaluating Energy Conservation Programs: Is Verbal Report Enough?

BP Energy Outlook 2030, London 2011, www.bp.com, Accessed October 18, 2011.

energy? Energy Efficiency, Volume 1, Number 1, pp. 79-104.

Journal of Consumer Research , Vol. 8, No. 3, Dec., 1981.

Volume 37, Issue 2, pages 108–131, Spring 1981

from voluntary participation programs, Energy Policy, Volume 28, Issues 6-7,

to continue to rise, and coastal land will continue to be added at their present rates.

land levels, and continued addition of coastal land.

Washington, D.C. 20045, aceee.org

June 2000, pp. 477-486

**13. Conclusion** 

**14. References** 

2011.


**10** 

*1México 2Ireland* 

**Presence of Polycyclic Aromatic** 

**Environment in Mexico City** 

Richard Gibson2 and Beatriz Schettino1

*2Institute of Agri-Food and Land Use* 

Salvador Vega1, Rutilio Ortiz1, Rey Gutiérrez1,

*School of Biological Sciences Queen's University Belfast* 

**Hydrocarbons (PAHs) in Semi-Rural**

*1Laboratorio de Análisis Instrumental, Departamento de Producción Agrícola y Animal* 

The quality of the environment in big cities depends on its population and their domestic, transport, and industrial activities. In some places agricultural land use coexists with urban areas and as a result of this urbanization and the presence of infrastructure for services like water, electricity, drainage, and the use of fossil fuels etc, contamination problems in the atmosphere, soil and water (Wilcke, 2000), that lately lead some ills on organisms such as respiratory malaises, liver-lung-skin cancer, irritation on eyes and others discomforts. The growth of urban environments presents a major challenge. However, Mexico City as center of economic growth, education, technological advancement, and culture, large city also offer

These concentrations of people and activity are exerting increasing stress on the natural environment, with impacts at urban, regional and global levels. In the last few decades, air pollution has become one of the most important problems of megacities. The nitrogen and sulphur compounds are main air pollutants, photochemical smog-induced primarily from traffic, but also from industrial activities, power generation, and solvents-has become the main source of concem for air quality. Air pollution has serious impact on public health, causes urban and regional haze, and has the potential to contribute significantly to climate

Mexico City and metropolitan area (MCMA), often simply called Mexico City, consists of 16 delegations of the Federal District and 37 contiguous municipalities from the State of Mexico and one municipality from the State of Hidalgo, some with populations over 1 million, that make up the total population of above 20 million for this megacity (Escobedo et al., 2000). Polycyclic aromatic hydrocarbons (PAHs) are compounds with two or more aromatic rings (benzene) produced by both natural and anthropogenic pathways although anthropogenic

opportunities to manage the growing population in a sustainable way.

**1. Introduction** 

change (Molina & Molina, 2004).

*Universidad Autónoma Metropolitana Unidad Xochimilco, Colonia, Coyoacán* 

