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Life orientation

Grade 8

Social development and career orientation

Module 27

The causes of particular diseases in terms of

Environmental factors

Activity 7:

To discuss the causes of particular kinds of diseases in terms of environmental factors,

As well as steps that are taken and could still be taken with regard to these diseases

[lo 1.1, 1.2,1.4]

The following messages have been taken from the Internet:

Stop inhaling tar; start breathing air!

Be tough; turn your back on smoking!

Smoking affects the health of children.

We have a right to clean water,

Because polluted, toxic water

Endangers

Health -

My own, and the health the family and of future generations

And of this planet.

We all have a responsibility -

Individual, state,

Business and industry,

to keep our water free from toxic substances

and to protect

our drinking water,

fish and beaches

  • Sum up the above messages as one message in a single sentence. Your message should make use of the following words: right, responsibility, health, environment.
  • Ask your educator to allow an opportunity for all the messages to be presented to the class. Then organise a class effort to formulate a message that can be spread through the school, as well as through the community. Bear in mind that the shorter the message, the more power it will have.
  • What is the message presented by the class?

Three feared diseases: HIV/AIDS, Tuberculosis and Malaria

There are several diseases that are feared by people. One such disease is cancer. But there is a specific reason for specifying AIDS, tuberculosis and malaria as feared diseases in this section: they affect vast areas of our country and a large portion of our population. Such diseases are known as pandemics.

1. HIV/AIDS

  • What do HIV and AIDS stand for?

HIV stands for Human Immunodeficiency Virus

AIDS stands for Acquired Immune Deficiency Syndrome

  • What are HIV and AIDS?

They are caused by a virus that is transmitted through bodily fluids such as blood, male semen, female vaginal fluid and breast milk.

The virus is transported along the bloodstream and infiltrates the cells of the body, where it multiplies and infects other cells.

An infected cell is not able to offer resistance to other infections and diseases.

AIDS is the condition that arises when the body becomes infected with various diseases and is unable to offer any resistance to the infection.

  • How is it possible to avoid HIV infection?

By means of

a healthy lifestyle, and

prevention of mother-to-child transfer of the HI virus.

  • Is it possible to help people who have AIDS?

People firstly have to be willing to be tested. This can be done by private doctors, and at clinics, hospitals and laboratories.

Such testing must be accompanied by effective consultation. This kind of service is available right across South Africa.

People who have AIDS are able to lead productive lives by following a healthy diet containing plenty of proteins and energy (kilojoules). They must control their stress levels, drink clean water, keep their hands clean and receive treatment for illnesses that they might pick up. They should avoid cats, as these animals carry germs.

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
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Source:  OpenStax, Life orientation grade 8. OpenStax CNX. Sep 12, 2009 Download for free at http://cnx.org/content/col11048/1.1
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