Adverse effects to human health by chemical substancesBy: Sigfrido H Duarte General Science Morris High School, Bronx, NY
Web quest: Persistent Organic Pollutants
Power Point: How could we use public politics in order to prevent adverse effects to human health by chemical substances?
INTRODUCTION
Persistent Organic Pollutants (POPs) are chemical substances that persist in the environment, bioaccumulate through the food web, and pose a risk of causing adverse effects to human health and the environment. With the evidence of long-range transport of these substances to regions where they have never been used or produced and the consequent threats they pose to the environment of the whole globe, the international community has now, at several occasions called for urgent global actions to reduce and eliminate releases of these chemicals. A 1997 Seattle Times investigation found that, across the nation, industrial wastes laden with heavy metals and other dangerous materials are being used in fertilizers and spread over farmland. The process, which is legal, saves dirty industries the high costs of disposing of hazardous wastes. The process is similar to the paradigm of fluoridation, in which the dumping of EPA certified hazardous wastes into the water supply saves industry the cost of disposal, while at the same time affecting the neurological and behavioralcapabilities of the population, as well as producing vast medical profitsfrom the long-term neurophysiological effects.
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TASK
This activity is designed to
show how Persistent
Organic Pollutants affect humans, but also show the impact public politics can have in
order to prevent adverse effects to human health.
Students task
will be to prepare a research document based on the health problems, how chemical may cause disease in the
populations located in the areas, and how these problems can be solved:
1) Your report should be chosen among the issues below:
A)-Musculoskeletal Toxicity: Adverse effects to the structure and/or functionof the muscles, bones and joints caused by exposure to a toxic chemical.Exposures to coal dust and cadmium, for example, have been shown to cause adverse changes to the musculoskeletal system. Examples of musculoskeletal diseases which can be caused by exposure to toxic chemicals include the bone disorders arthritis, flourish, and osteomalacia.
b) Cardiovascular Toxicity: The adverse effects on the heart or blood systems, which result from exposure to toxic chemicals.
C)- Air and water pollution
d) Immunotoxicity: Adverse effects on the normal functioning of the immunesystem caused by exposure to a toxic chemical. Changes in immune function could produce higher rates of infectious diseases or cancer, or more severe cases of those diseases. Immunotoxic chemicals can also cause autoimmune disease or allergic reactions.
e) Reproductive Toxicity: Adverse effects on the male and/or femalereproductive systems caused by exposure to a toxic chemical. Reproductivetoxicity may be expressed as alterations in sexual behavior, decreases infertility or fetal loss during pregnancy. Some official definitions of reproductive toxicity, for example in California's Proposition 65, includedevelopmental toxicity as part of reproductive toxicity.
f) Neurotoxicity: Adverse effects on the structure or function of thecentral and/or peripheral nervous system caused by exposure to a toxicchemical. Symptoms of neurotoxicity include muscle weakness, loss ofsensation and motor control, tremors, cognitive alterations and autonomicnervous system dysfunction.
g) Developmental Toxicity: - Adverse effects on the developing child whichResult from exposure to toxic chemicals or other toxic substances. AdverseEffects can include birth defects, low birth weight, and functional orbehavioral weaknesses that show up as the child develop.
h) Endocrine Toxicity: Any adverse structural and/or functional changes tothe endocrine system (the system that controls hormones in the body) whichmay result from exposure to chemicals. Endocrine toxicity can harm human and animal reproduction and development.
2) Your report must include:
a) -Previous and present policies related to this matterb) You will debate in-group each policy based on social-economic view
Process:
1.Use illustrations enter students to the anatomy of to healthy body. Discuss common symptoms of an illness . Compare the differences between to healthy and another sick person. Give emphasis to the ability of each student prevent these problems of the health.2. Divide the class in different groups
Each student will work cooperatively with a partner or small group to search the internet to complete an important role in his/her group. He or she will:
-Identify the quality and the source of the chemical -. · -Define objectives and goals and uses them to guide their project. -Involve members of the community in the planning of their project. -Clarify roles of the agency and responsibilities and administers to the project indeed. - Design a manager of the project. Organize a committee of the coordinating local. · -Define the critical area and how it contributes with the greatest amount of the primary pollutants. · -Chooses an earth-treatment you/he/she/it approach that he/she/it/you will direct the problem of the water-quality. Encourage participants carry out systems of two or more BMPs designed to reduce a particular pollutant. · Designs a quality of the water and treatment of the earth supervises and evaluation plans program when possible, document the effects of BMPs he/she/it/you installed. · -Evaluates effectiveness of the project. 3 Students will begin investigation finding the steps taken by the government relate to this topic. Preparing it for the debate, students will go to the Internet, library, or other resources.. They will preserve the information in their computer and isolate pertinent rules. 4- Students will use the section of the resource to predict future results
5- -Students will summarize their results.
5-Once has been completed the study, members of the group will discuss important points that can help support their arguments. Also, they will write the results including graphs and maps.
Evaluation:
This two-page self-evaluation allows students to measure their own learning throughout the Persistent Organic Pollutants and how could we use public politics in order to prevent adverse effects to human health by chemical substances theme study. They should record completed activities in the chart on a continuous basis. Students will have the opportunity to reflect on the uses of Internet as a learning tool. It is hoped that they become aware of what Internet offers in terms of educational information .
The homework summaries of your individual web quest efforts will be graded on the basis of :
Needs Improvement -Good -Very Good- Excellent
List all the activities that
you used in order to complete this topic (activities of the computer, projects
of the investigation, art projects, writing, graphic, use of other resources
and maps). :
-Look at the whole work that
has completed. Do their efforts to the problems respond expounded?
Are the Activities of the computer interesting?
-Did you make much use of the computer and the Internet in
your work? Did you make frequent use of these tools? Reason yes or reason not?
What thing you not wise on the Internet before carrying out this
investigation?
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Can easily find information. - Has a proper title
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Information is useful.
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Rich content
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Support arguments
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Can see meaningful information
-Is the writing rich in graphs and maps ?
-This project uses appropriate page format.
-- Good use of graphics and
color.
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Image links and image maps have a text alternative.
-Can move from page
to page easily.?
- Pages are not inordinately long.
--Was the design well orderly?
-Are you happy with their results of this investigation or not?
What could you make to improve this work?
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This project offers interactivity. The reader engages with
it.
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Credibility
-Which are they three things
more interesting that you learned upon studying this topic? Explain things that were interesting for you.
Additional resource are included. Analyzed policy
- What Principles and Regulations is the government Developing?
- How Does the government Develop Rules and Policies and How Can You Participate?
- What Actions Are Included in their agenda?
- How Is the Agenda Organized?
-What Tools Are Available To Help Quickly Identify Actions That Are of Interest to You?
-How Can You Access Federal Register Documents via the Internet and via E-mail?
I. What Special Attention Do We Give to the Impacts of Rules on Small Entities?
Alternative text page is offered .
Contact person is stated. summarize included
resources
Please visit several of
these sites .It is always good to reinforce well the strengths and weaknesses
while you do an investigation.
www. Altavista,com
www.ask.com
http://www.maxwell.syr.edu/plegal/ppae/ppae1.html
nature-s-health.com
ncrtel.org/cgi-bin/tipsprof.cgi
edu/academics/departments/arc/mla
internet .html
http://www.maxwell.syr.edu/plegal/ppae/ppae1.htmlhttp://www.maxwell.syr.edu/plegal/ppae/ppae1.html
ncrtel.org/cgi-bin/tipsprof.cgi
http://www.riaa.com/copyright-Laws-1.cfm
http://fairuse.stanford.edu/primary/index.html#caselaw
http://www.securelaw.cornell.edu/topics/copyright.html
http://www.tufts.edu/departments/fletcher/multi/texts/BH423.txt
CONCLUSION
The purpose of this investigation is to assess the impact of low-level, long-term environmental chemical exposure on the health of exposed persons. Because the health outcomes and, consequently the latency periods, are not known, this is a longitudinal effort.
The data include information that have been analyzed, and Used to compare the significant increases of diseases conditions: liver problems, anemia, urinary- tract disorders, diabetes, skin rashes, and respiratory allergies .
Results indicated that the auditory-evoked potentials were not sensitive enough to demonstrate the nervous disturbances in our subjects despite prominent vertigo syndromes. Visual, cognitive, somatosensory, and dermatome-evoked potentials, and sensory peripheral nerve conduction velocity did prove useful in correlating nervous system complaints with objective measurements.
The
use of chemical substances plays a central role in the emergency of new
illnesses in the human beings The "Illnesses nowadays present dramatic increases with the use of hazardous
waste, spray, radioactive waste, etc, those that has left global
consequences," Recent Studies point out a connection between the direct
and indirect contact of people with chemical residuals and the emergency of
mortal illnesses. Nowadays, it is made necessary require that all the nations
of the world adopt norms of based on health the protection of the environment
and orientation publishes. The quality of the science, economic, and policy
analysis regulations are vital to the credibility and ultimately our
effectiveness in protecting human health and the environment.
