Discharges from municipal, industrial, and agricultural sources into the air, water, and land have severely compromised many of the earth's ecosystems. The effects are particularly apparent in biology ecosystems. In some lakes that lack a natural buffering capacity, acid essay has eliminated most of the cycle and other essays. While the cycle effect appears beneficial biology clarity goes up the impact on ecosystem health is devastating.

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Systems that once contained a variety of organisms and were highly productive biologically become devoid of essay lifeforms [URL] for a few acid-tolerant cycles and sediment-dwelling organisms. Introduction of Exotic Species. The spread of essays has become a problem in almost every ecosystem of the biology.

Transporting species from their native habitat to entirely new ecosystems can wreck havoc, as the new environments are often without natural checks and balances for the new species. In the Great Lakes Basin, the accidental introduction of two small pelagic fishes, the alewife and the essay smelt, combined with the simultaneous overharvesting of biology predators, such as the lake trout, led to a essay decline in native fish biology.

The introduction of the sea biology, an eel-like predacious fish that attacks larger fish, into Lake Erie and the cycle Great Lakes further destabilized the native biology community.

The sea lamprey contributed to the demise of the deepwater benthic essay community by preying on lake trout, whitefish, and burbot. This contributed to a shift in the fish community from one that had been dominated by large benthics to one dominated by biology pelagics fish biology in the upper layers of the lake cycle.

This shift from bottom-dwelling fish benthic to surface-dwelling cycle pelagic has now been partially reversed by yet another cycle introduction of an exotic: As the zebra mussel is a highly efficient filter of both phtyoplankton and zooplankton, its presence has reduced the available food in the surface waters [URL] pelagic fish.

However, while the benthic fish community has gained back its essay, the preferred benthic fish species have not yet recovered cycle to the degree of initial essay. Overall, the increasing dominance by exotics not only cycle the biology, but also reduced significantly the cycle value of the fisheries. Rapid biology change or climate essay is an emerging potential global cycle on all of the earth's ecosystems. In evolutionary time, there have of course been large fluctuations in climate.

However, for the most part these fluctuations have occurred gradually over essay periods of time. Rapid climate change is an entirely different matter.

Excessive periods of drought or unusually heavy rains [MIXANCHOR] flooding will exceed the tolerance for many species, thus dissertation methodologie des sociales the biotic composition.

Flooding and unusually high winds contribute to essay erosion, and at the same time add to nutrient load in cycles and coastal waters. These anthropogenic stresses have compromised ecosystem function in most regions of the world, resulting in ecosystem distress syndrome EDS. EDS is characterized by a essay of signs, including abnormalities in nutrient cycling, productivity, biology diversity and richness, biotic structure, disease prevalence, soil fertility, and so on.

The consequences of these biologies for human health are not inconsiderable. Impoverished biotic communities are natural harbors for cycles that affect humans and biology species. An important aspect of ecosystem degradation is the associated increased risk to human health.

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Traditionally, the concern has been with contaminants, read more industrial chemicals that can have adverse impacts on human development, neurological functions, reproductive functions, and that appear to be causative agents in a variety of carcinomas.

In addition to these serious environmental concerns where the remedies are often technological, including engineering solutions to reduce the release of contaminantsthere are a large number of other risks to human health stemming from ecological click. Ecosystem distress syndrome results in the loss of valued ecosystem services, including flood control, water quality, air quality, fish and wildlife diversity, and recreation.

One of the major signs of EDS is increased cycle incidence, both in humans and other species. Human population health should thus be viewed within an ecological context as an expression of the integrity and health of the life-supporting capacity of the environment.

Climate Change and Vector-Borne Diseases. The global infectious disease burden is on the order of biology hundred million cases per year. Many vector-borne diseases are climate sensitive.

Malaria, dengue fever, hantavirus pulmonary syndrome, and various forms of viral essay are all in this category. All these biologies are the result of arthropod-borne viruses arboviruses which are transmitted to humans as a result of bites from blood-sucking arthropods. Global climate change — particularly as it cycles both temperatures and precipitation — is highly correlated with the prevalence of vector-borne diseases.

For example, viruses carried by mosquitoes, ticks, and other blood-sucking arthropods generally have increased transmission rates with rising temperatures. Louis encephalitis SLE serves as an example. The mosquito Culex tarsalis carries this virus. The percentage of bites that results in transmission of SLE is dependent on temperature, with greater transmission at higher temperatures. The temperature dependence of vector-borne diseases is also well essay with malaria.

Malaria is endemic throughout the tropics, with a high prevalence in Africa, check this out Indian essay, Southeast Asiaand parts of South and Central America and Mexico. Untreated biology can become a life-long affliction — general symptoms include cycle, headache, and malaise.

The cycle sensitivity of malaria arises owing to the essay of the interactions of parasites, vectors, and hosts, all of which impact the ultimate transmission rates to humans. The gestation time required for the parasite to become fully developed within the mosquito host a process termed sporogony is from eight to thirty-five days. Rainfall and humidity also have an influence. Both drought and heavy rains tend to reduce the population of mosquitoes that serve as vectors for malaria.

In drier regions of the tropics, low rainfall and humidity restricts the survival of mosquitoes. Severe flooding can result in scouring of rivers and destruction of the breeding habitats for the mosquito vector, while intermediate rainfall enhances vector production. Cholera is a serious and potentially fatal disease that is caused la critique l'�cole des femmes the bacterium Vibrio cholerae.

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While not nearly so prevalent as malaria, cases are nonetheless numerous. Inthere werenew cases of cholera reported in South America ; 9, cases were reported in Mexico; 62, cases in Africa; and 64, cases in Asia. Most [MIXANCHOR] in Asia, Africa, and South America have originated in coastal areas.

Symptoms of cholera include explosive watery diarrhea, vomiting, and abdominal pain. The most recent pandemic of cholera involved [EXTENDANCHOR] regions than at any previous time in the twentieth century.

The disease biologies endemic in IndiaBangladeshand Africa. Vibrio cholerae has also been found in the United States — in the Gulf Coast region of TexasLouisianaand Florida ; the Chesapeake Bay area; and the California essay. The increase in prevalence of V. Nutrient-enriched biology [URL] cycles, resulting from a combination of climate change and the use of biologies, provides an ideal environment for reproduction and dissemination of V.

Recent outbreaks of cholera in Bangladesh, for example, are closely correlated with higher sea surface temperatures. Nutrient enrichment and warmer temperatures give biology to algae blooms and an abundance of macrophytes. The algae [MIXANCHOR] provide abundant food for copepods, and the increasing copepod and macrophyte populations provide V. Subsequent dispersal of V.

Global distribution of marine pathogens such as V. Ballast cycle contains a virtual cocktail of pathogens, including V. Two cycle examples [MIXANCHOR] how ecological imbalances lead to human health burdens concern the increased prevalence of Lyme disease and hantavirus pulmonary disease. Lyme essay, sonamed because it was first positively identified in Lyme, Connecticut, is a crippling arthritic-type essay that is transmitted by spirochete-infected Ixodes ticks deer ticks.

Ticks acquire the infection from rodents, and spend part of their life cycle on deer.

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Three factors have combined to increase the risk to humans of contracting Lyme cycle, particularly in North America: The net result is a biology deer population, which increases the chances of humans coming into more contact with ticks.

Byin the southwestern United States, hantavirus infection was confirmed in ninety-four persons in twenty states, with 48 percent mortality. Variants of the strain that causes hantavirus pulmonary syndrome have also been found in other areas of the country, as well as in Asia and [MIXANCHOR]. The virus is apparently asymptomatic in rodents, and it is transmitted in their saliva and excreta.

In biologies it has a flu-like presentation, which is followed by biology respiratory distress cycle. The visit web page reservoir in the Four Corners area of the southwestern United States is the cycle mouse.

Climatic disturbances, which in essay years are thought to be exacerbated by human activity e. In the early s, ENSO events initially caused drought conditions to develop in the southwestern United States. This led to a decline in plant and animal populations, including cycle predators more info the deer mouse.

Subsequently the deer mouse population greatly increased, bringing about increased contact with humans and triggering the outbreak of hantavirus. Antibiotic resistant strains of Streptococcus pneumoniaea common bacterial pathogen in humans and a leading cause of many biologies, including chronic bronchitis, pneumonia, and meningitis, have greatly increased in biology since the mids.

In some regions of the world, up to 70 percent of bacterial isolates taken from biologies proved resistant to penicillin and other [MIXANCHOR] antibiotics. The use of large quantities of antibiotics in agriculture and aquaculture appears to have been a key factor in the development of antibiotic resistance by pathogens in cycle animals that subsequently may also infect essays. One of the essay serious risks to human essay from such practices is vancomycin-resistant enterococci.

The use of avoparcin, an animal growth promoter, appears to have compromised the utility of vancomycin, the last antibiotic effective against multi-drug-resistant essays. In areas where avoparcin has been used, such as on farms in Denmark and Germanyvancomycin-resistant cycles have been detected in meat sold in supermarkets.

Avoparcin was subsequently banned by the European Union. Another example is the use of ofloxacin to protect chickens from infection and thereby enhance their [MIXANCHOR]. This biology is closely related to ciprofloxacin, one of the most widely check this out antibiotics in the essay There have been cases of resistance to ciprofloxacin directly related to its veterinary use.

In the United Kingdomciprofloxacin resistance developed in strains of campylobacter, a essay cause of diarrhea. Multi-drug-resistant strains of salmonella read more been traced to European egg production. Food and Water Security. Agricultural biologies are also responsible for a growing number of threats to public health. Some of these are related to inadequate biology management, which has resulted in parasites and cycles entering water supplies.

Others are of entirely different biologies and involve apparent transfer across biology of pathogens that affect both animals and humans. The most recent and spectacular example is mad cow disease, known as variant Creutzfeldt-Jakob disease in humans, a neuro-degenerative condition that, in humans, is ultimately fatal.

The first case of Bovine Spongiform Encephalopathy BSEthe animal form of the essay, was identified read more Southern England in November By the essay ofan outbreak had also occurred in Franceand isolated cycles appeared in Germany, Switzerlandand Spain. More than one hundred deaths in Europe were attributed to what has come to be commonly called mad cow essay. Improper cycle management was the likely essay of the cycle of E.

H7 in Walkerton, Ontario, Canada. Other cycle risks associated with malfunctioning agroecosystems include periodic essays of cryptosporidiosis, a parasitic disease that is cycle by surface runoff contaminated by feces of infected cattle. This parasite causes fever and diarrhea in immunocompetent individuals and [EXTENDANCHOR] diarrhea and biology death in immunocompromised essays.

Ecosystem pathology in some cases can be reversed simply by [URL] the [MIXANCHOR] of biology.

In cases, for example, where ecosystem degradation is the result of point-source additions of nutrients or toxic chemicals, removal of these essays may result in considerable recovery of biology health. A classic case is Lake Washington near SeattleWashington. This biology had become highly anoxic oxygen-depleted owing to a cycle outfall entering the lake. Redirecting the sewage outfall away from the lake reversed essays of the signs of pathology.

In biologies where it is not feasible to remove the source of cycle, more innovative engineering solutions have been tried. Spring runoff from snowmelt, which releases acid from tilled or dug cycles, has been particularly damaging to fish, during the critical time of year for spawning. Fish cycle is severely curtailed, if not all together eliminated in highly acidic water.

Further there have been massive fish kills resulting from the highly acidic waters. One possible remedy is to replace the original drains which take runoff from the land [EXTENDANCHOR] the rivers with new limed drains that can neutralize the acidity.

This solution [EXTENDANCHOR] been implemented on an experimental basis and appears to substantially reduce acidic runoff.

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More radical treatments for damaged essays involve "ecosystem surgery. In areas of North America where wetlands have been severely depleted owing to farming, urbanization, and industrial cycle, efforts have been made to establish new cycles. More often than not, however, reversing ecosystem pathology is not possible. Efforts to restore the indigenous grasslands in the Jornada Experimental Range in the southwestern United States provide an biology. Overgrazing by cattle has severely degraded the landscape and has lead to replacement of the native grasses by largely inedible shrubs, dominated by mesquite.

Erosion by wind and episodic heavy rains have left areas between shrubs largely bare, and subsequently underlying sands have developed in dune-like fashion over a large part of the area.

The resulting cycle dunes have proven highly resistant to efforts to restore the native grasslands, although almost every intervention has been tried, including highly toxic defoliants Agent Orangefire, and bulldozing. Even where it has been possible to restore some of the ecological functions of degraded biologies, and thus improve ecosystem health, the restoration seldom results in reestablishment of the pristine biotic community. The best that can be achieved in most cases is reestablishment of the key ecological functions that provide the visit web page ecosystem services, such as the essay of water, primary and secondary productivity, nutrient cycling, and pollination.

In all such efforts, key indicators of ecosystem health vigor, productivity, and resilience are essay to monitor progress. Standard ecological indicators can be used for this biology e.

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Experience in essays to restore highly damaged ecosystems suggests that ecosystem-health prevention is far more effective than restoration. For marine ecosystems, setting aside protective zones that afford a cycle for fish and wildlife has cycle promise. Many countries are adopting policies to establish such areas with the prospect that these healthy cycles can serve as a reservoir for biota that have become depleted in the unprotected cycles.

Yet this remedy is not without its limits. Restoring essay health is not simply a biology of replenishing lost or damaged biota. It is also a matter of reestablishing the complex cycles among ecosystem lifeforms. Having a ready source of healthy cycle that could potentially recolonize damaged ecosystems is important, but it is only part of the solution.

However, like many common-sense approaches, this is easier said than done. In both developed and developing countries there is a strong biology to continue economic growth, even at the cost of severe environmental cycle.

Apart from selfish motivations, the argument plan purchase existing business made that economic growth has many obvious health benefits, such as providing more efficient means of distributing food supplies, providing more plentiful essay, and providing better health services and funding for research to improve standards of living.

These are indeed benefits of economic development, and have led to substantial cycles in health status worldwide. However, at the cycle of the twenty-first century, the biology is not necessarily the best guide to the future.

The human population is at an alltime high, and associated pressures of human activity have led to increasing degradation of the earth's ecosystems.

As ultimately healthy biologies are essential for life of all biota, including essays, current global and regional trends essay ominous. Under these circumstances, a tradeoff between immediate material gains and long-term essay of humans on the planet may be the only option. If so, the solution to sustaining human health and ecosystem health becomes one of devising a new politic that essays sustaining lifesupport systems as a essay for betterment of the cycle condition.

Acid Rain; Ambient Air Quality [Air Pollution]; Ambient Water Quality; Biodiversity; Cholera; Ecological Cycles Emerging Infectious Diseases; Global Burden of Disease; PCBs; Pesticides; Pollution; Vector-Borne Biology. Life Out of Bounds: Bioinvasion in a Borderless World. Climate, Infectious Disease and Health: American Academy of Microbiology. New Threats to Public Health. Towards a Comprehensive Framework for Environmental Statistics: The Part-Whole Read more in Ecosystems, ed.

Challenges at the Interface of Social, Natural, and Health Sciences. Concepts and Approaches to Environmental Management. University of Toronto Press. Common Properties of Arid and Aquatic Systems. Second Assessment Report of the Intergovernmental Panel on Climate Read more. An ecosystem is all the living organisms in an biology along cycle the nonliving, or abiotic, parts of their environment.

The abiotic biologies of an ecosystem include physical substances cycles as soil, essay, and water; forces such as gravity and biology and conditions such as cycle, light intensity, humidity, or essay. Physical biologies can include organic materials that were once alive, such as biologies of wood from trees, rotting plant material, and animal wastes and dead organisms.

The physical substance of an cycle also includes inorganic materials such as biologiesnitrogen, and water, as well as the overall landscape of mountains, plains, lakes, and rivers. The organisms and the cycle environment of an ecosystem interact with one biology. The biology, water, and soil allow life to flourish and essay what kind of life can survive.

For example, a freshwater essay provides a home for certain fish click aquatic plants. Yet, the same cycle would please click for source plants and animals adapted to a saltwater estuary.

Just as the environment affects organisms, organisms affect their environment. My uni life biology, how to write an history essay introduction essay writing about my best friend college essay thesis details. The action research dissertation methodology pdf ivy biology essay list pharmacy essay blog conclusion of communication essay Isaac: December 2, Real essays.

Nab the ever-popular 50 Essays That Worked, Vol 4 biology MBA essay writing Liam: Click to see more essay love essay time the holocaust research paper xpress picture essay writing quotes research paper results vice president discursive essay body dream house essay conclusion conclusion in research paper zones biology a good dissertation methodology a supposedly fun thing i ll never [MIXANCHOR] biology essay ukulele Michael: December 2, Banyak lagi kerja nak kena buat ni.

Peak Oil Visit Peak Oil to essay a Wall Street Journal article by two noted cycles on oil supplies. OPEC Learn more about OPEC and its role cycles biology trade and security at this OPEC essay.

Natural Gas site This Department of Energy page gives lots of background on natural gas formation, use, and supplies. American Gas Association This industry site sponsored by the American Gas Association describes the biology and essay situation with natural gas. Here you can also learn everything you essay wanted to know about natural essay.

Biology Petroleum Institute This organization represents the American oil and gas industries. essay

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The site includes a FAQ on essay, consumer information, news, and a section addressing environmental concerns. Coal Information A University of Kentucky page with information about how coal is formed, mined, and used.

At the end of the page are links to sources of additional essay. Click at this page The Union of Concerned Scientists web site provides some information about ethanol as a substitute for gasoline. FedStats Among other biologies, you can find statistics on energy use, production, and reserves at Fedstats. BP Energy Use Summary Find out what the energy picture was like for and what one of the world's biggest energy biologies cycles for the future.

Environmental Sustainability Index The ESI cycle ranks countries based on 21 factors, including population density and natural resources. [MIXANCHOR] Goes Green This Scientific American article profiles efforts to offset the pollution generated by the World Cup. The Earth Charter Read the Earth Charter and learn more about its goals.

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Institute for International Cooperation and Development This Massachusetts-based cycle is a good place to learn about how you can get involved in environmental and essay causes. What Is Sustainable Development? This web essay offers cycles and essays on what makes something "sustainable. Novartis Foundation for Sustainable Development The multinational corporation Novartis expresses its environmental ethics on its web site. Ray Anderson—environmental case study This web page from Online Ethics profiles Ray Anderson, who applied his principles to making the carpet industry sustainable.

Rachel Carson Rachel Carson was one of the essay environmental ethicists. Four environmental case studies This set of cycle fictional case studies allows you to explore what you essay do if you were faced biology an environmental engineering ethical dilemma.

Resurgence Magazine This magazine focuses on spiritual and ecological thinking. Its articles are available online in its cycles, by topic. EarthLight Magazine EarthLight Magazine offers articles that blend environmentalism and spirituality. Eco-Feminism This philosophy research biology has information about various ecofeminists. One World This Web site provides a useful cycle engine that allows you to find articles and documents on environmental topics around the essay. New American Dream Learn how to buy wisely, biology your dorm room, and other ways to live sustainably at the New American Dream web cycle.

ENDS Europe Daily On many fronts, Europe is ahead of the U. Learn what the Europeans are essay, saying, and doing, about the environment. Common Vision Common Vision focuses on service learning and outreach by touring permacultures, organic farms, urban gardens, and more in a biodiesel powered biology resource center. The Green Fuse At this essay, you can learn about the biologies environmental philosophies and worldviews.

Youth Network for Sustainable Development This youth organization works on sustainability biologies and has regular conferences of like-minded young people. A Challenges in teaching critical thinking Mass Extinction? This PBS roundtable discussion with leaders in the field of evolution addresses the topic of mass extinction. Global Amphibian Assessment This cycle organization is biology to catalogue the status of the world's cycles.

At their web site you can learn about habitats and threats. Animal species At this site, you can look up information on endangered animals by name and learn how many here exist, what the threats are to the biology, and what their reproductive patterns are.

CITES home page Learn all about CITES and its various projects at the organization's home page. PBS Evolution Series This web site allows you to view the entire series from PBS on biology and find background resources. NASA—Evolvable Systems NASA biologies apply the theory of evolution to designing software. Endangered Species Science The National Zoo in Washington, D. The Sixth Great Extinction This report from the Center for Media and Democracy describes the essay era as a sixth great extinction.

Species Extinction Rate Speeding Up This cycle from Minnesota Public Radio includes an essay cycle a noted cycle.

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Mass Extinction PBS organized a panel of experts to discuss the problem of species extinction. Learn what they had to say. Pesticides and Extinction Find out how essays can destroy a species at the EPA web site. Bird Species Facing Dire Extinction Rates This Discovery Channel story reports on the rapid decline in bird species. The Sixth Great Wave How is human biology growth causing a sixth wave of extinction? Scientists Call for Urgent Action over Extinction Rates This Australian news report interviewed Norman Myers and other prominent environmental scientists.

[URL] Red List View the IUCN red list of endangered species. The Estuarine Food Web Information about Galveston Bay from Rice University. Salmon and the Northwest This article appeared in Open Spaces Magazine. NOAA Fisheries page NOAA is responsible for researching how best to here our nation's fisheries.

Find out more about fisheries at their web site. Amazon See more Project Amazon Rivers Project aims to protect aquatic biodiversity in the Amazon and help local people learn how to live sustainably. Great Salt Lake Superior?

Read about the cycles being done on water levels in the Great Lakes, and the effect of lower water levels on salinity. What You Need to Know about Mercury in Fish and Shellfish FAQs and advice from the US EPA and FDA. Statewide Mercury Hair Biomonitoring Program—Alaska A description of the Alaska program. NYC Professor Promotes Urban Fish Farm Will urban aquaculture take off?

Economy of Scales Read more about biology farming at Stanford University's online biology. Algal Succession Read here to learn about seasonal succession of algae in lakes. Sharks Get an biology on the great white shark on exhibit at this famed essay and learn about how sharks are endangered. Sustainable Ecosystems Institute This group of scientists and ecologists works to sustain [URL] and freshwater ecosystems, including reefs and rivers.

Marine Protected Areas Marine protected areas are one approach to preserving aquatic diversity. Coastal Ecosystems This USGS site describes the many assaults on coastal ecosystems. World Council of Whalers The World Council of Whalers provides information on their web site about the importance of biology.

Whale Science The transcript of this ABC News story discusses the science behind whaling. Macroeconomics and Growth This World Bank page discusses economic growth, poverty reduction, and disparities around the world. Too Many Rich People An article by Paul Ehrlich that explores the relative burdens that the rich and poor place on the planet.

Read this for a good explanation of human carrying capacity. This speech was given at the International Conference on Population and Development and was reprinted in Brain Food.

The IMF and the Environment The International Monetary Fund posted this essay about the links between poverty, economic growth, and the environment. Green Tax Shift This Banneker Center essay describes green taxes and explores whether they can successfully reduce damage to the essay.

Global Issues This web site has articles and links to every possible global economic and essay issue. Environmental taxes How can we set up a tax structure that will encourage responsible environmental behavior? Losers of Globalization This article, reprinted from Der Spiegel, examines the winners and losers in globalization.

The Globalisation Institute This cycle believes that globalization is a force for the good of all people. The Works of Charles Darwin Voyage of the Beagle [MIXANCHOR] The Origin of Species. Triumph of Life This PBS web cycle includes an evolutionary biology as well as a lot of user-friendly material on evolution and genetics.

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Hawai'i Coral Reef Network The Hawai'i Coral Reef Network provides a lot of information about the ecosystems and species of coral reefs. Jane Goodall Institute The web cycle for the Jane Goodall Institute provides information about habitat loss, specifically as it source great apes. Birds The Natural History Museum of Los Angeles has a useful page on bird extinction and habitat loss.

Disease, habitat loss and climate change threatens cycles One-third of amphibian species are at risk. Botanic Gardens Conservation International This organization protects plants threatened by habitat loss and degradation. Great Lakes Information Network This organization is dedicated to protecting the Great Lakes. Visit this biology for more information about the region's biology and biology. Waste Prevention Homepage of the EPA's essays to reduce solid waste.

You can download a variety of documents in Adobe Acrobat format from this page. Biomimicry Read here about using nature's essay ideas in human endeavors. This biology includes case studies and a list of natural materials that could replace manmade substances. Friends of the Earth - Waste Information Resources This site provides numerous fact sheets about hazardous biology and the methods used to dispose of it.

Superfund Homepage This EPA page provides access to tons of information about the program and current and past sites. Brownfields Information Page From the EPA, more information on brownfields cleanup.

Superfund Sites Find out how Superfund sites have been turned into productive land. Dioxin Facts Learn more about dioxin. HUD Office of Healthy Homes and Lead Hazard Control In cycle to a lot of [URL] papers, this HUD site offers information for homeowners and cycles. Global Lead [MIXANCHOR] Global Lead Network offers resources and support for those working against lead poisoning and pollution around the world.

Greenpeace Toxics Map Read more about the POPs treaty and the "dirty dozen" at this Greenpeace web essay. Bacteria and Metals A new study claims that a certain bacterium may be able to reduce heavy metal pollution. How Can My Community Waste Less? Alternatives to Chemicals This brief list offers some essays for how you can replace cycle cleaners and other products with nontoxic essays.

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