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Sosiale wetenskappe: aardrykskunde

Graad 7

Bevolkingsgroei en verandering

Module 9

Bevolkingsgroei en verandering: die impak van miv/vigs

Van die belangrikste invloede op bevolkingsverandering vandag is VIGS. Nog nooit in die geskiedenis was daar ‘n menslike ramp met dieselfde afmetings nie! Die lewensverwagting van hele bevolkings daal, kinders word in hul duisendtalle wees gelaat, armoede neem toe, produksie in bykans alle sektore van die ekonomie neem af, en dies meer.

Afrika is die vasteland wat die ergste getref is, en Suid-Afrika is die ramp ook nie gespaar nie! In die geheel gesien, nader ons ‘n tyd waar bevolkings krimp, eerder as wat daar groei is!

1. Bevolking

Om vas te stel watter invloed MIV/VIGS op die bevolking het, moet ons eers na die beskrywing van ‘n bevolking kyk.

‘n Jong bevolking

Vanweë die geboortesyfer wat baie hoër is as die sterftesyfer, is daar ‘n vinnige groei in die bevolking.

‘n Volwasse bevolking

Hier oortref die geboortesyfer beswaarlik die sterftesyfer en daarom is daar ‘n baie stadige groei in die bevolking.

‘n Ou bevolking

Omdat die geboorte- en sterftesyfer naasteby ooreenkom, is by hierdie soort bevolkingsamestelling geen groei nie.

n Krimpende bevolking

Wanneer die bevolkingsamestelling so lyk, oortref die sterftesyfer die geboortesyfer en sal hierdie bevolking uitsterf.

ouer mense: 60+ volwassenes: 30 - 59 jeug: tot 29

.2. Die ideale toestand wat Suid-Afrika nastreef

’n Baie groot deel van die Suid-Afrikaanse bevolking is arm en nie behoorlik geletterd nie. ‘n Daadwerklike poging moet dus in Suid-Afrika aangewend word om armoede te verlig en geletterdheid op ‘n aanvaarbare vlak te kry. Nog ‘n ideaal is dat gesondheidsdienste verbeter en die bevolkingstoename onder beheer gebring moet word, want ons land het beperkte hulpbronne, soos byvoorbeeld ‘n tekort aan water.

Soos julle uit die grafieke hieronder kan aflei, het die lewensverwagting weens verbeterde sanitasie en mediese sorg gestyg en het die bevolkingstoename aansienlik gedaal in die 20 jaar tussen 1980 en 2000. Die dalende geboortesyfer kan gedeeltelik aan verstedeliking toegeskryf word. In Suid-Afrika het die bevolking dus van ‘n jong bevolking (met ‘n te groot toename) begin verander en is dit op die pad na ‘n meer aanvaarbare volwasse bevolking waar die toename binne perke is.

Suid-Afrika: Groei tussen 1980 en 2000

Suider-Afrikaanse Ontwikkelingsgemeenskap (SAOG): Lewensverwagting in jare

  • Verbeterde mediese sorg, higiëne en algemeen verbeterde lewensgehalte in die SAOG-lande het verseker dat die lewensverwagting van mense gestyg het.
  • As julle na die grafiek kyk, sal julle sien dat die baba wat in die laat vyftigerjare van die vorige eeu in Namibië gebore is, ‘n lewensverwagting van iets oor die 40 jaar gehad het, terwyl een wat 40 jaar later gebore is, na verwagting 20 jaar langer sou leef.

. . . . . . . . . en toe breek die MIV/VIGS-epidemie uit. Mense wat van ‘n pandemie praat, is eintlik korrek, want die siekte kom oor die hele land en vasteland, en die res van die wêreld voor!

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Aardrykskunde graad 7. OpenStax CNX. Sep 09, 2009 Download for free at http://cnx.org/content/col11020/1.1
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