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Reasons for the fragility of our ecosystem What you could do to make our ecosystem more sustainable

2. Structural deficits

a) Give FIVE reasons why it was impossible for black people in the homelands to make a success of farming. (Remember that “structural deficits” are related to weak places in the system.)

3. Demand-driven deficits :

a) Explain in your own words what “demand-driven deficits” mean.

b) Draw two conclusions from each of Tables 4 and 5.

4. Availability-driven deficits:

a) Explain what “availability-driven deficits” signify.

b) How does deforestation contribute to availability-driven shortages?

5. Draw up a summary of the reasons why urbanisation took place so rapidly in recent times in South Africa.

Activity 2:

To answer questions about environmental pollution

[lo 2.2]

With a partner:

Study the following table and then answer the questions that follow:

Problem Impact Area
Soil compaction 2 million hectare Highveld – maize
Salinisation 1,2 million hectare Irrigated soil
Pollution 31 000 hectare Industrial / Domestic

1. Which of the problems in the above table affect the largest area?

2. Where does the problem of salinisation occur most generally?

3. What are we able to do in our homes to minimise or prevent the effects of pollution on agricultural land?


Learning outcomes(LO)

LO 1

GEOGRAPHICAL RESEARCH The learner can apply research skills to study geographical and environmental concepts and processes.

Assessment standards(AS)

This is clear when the learner:

1.3 analyses and makes inferences from sources such as photo’s, maps, atlases, graphs and statistics [working with sources];

1.5 recognises information in the field and records it [working with sources].

LO 2

GEOGRAPHICAL KNOWLEDGE AND UNDERSTANDING The learner can demonstrate geographical and environmental knowledge and understanding.

This is clear when the learner:

2.2 identifies ways in which Science and Technology have a positive and a negative influence on development [people and resources].



a) Low rainfall: Plant crops that adapt to rainfall figures

  • Water shortage: Build catchment dams and water restrictions
  • High population growth: Education
  • Deforestation as a result of

Development: Plant natural forests

  • Subsistence farmers - causes

erosion: Scientific farming methods

2. a) - Not sufficient access to fertile soil

  • Soil of inferior quality
  • Not sufficient funds to purchase seed, implements and fertiliser
  • Traditional farming
  • No market for produce

3. a) Shortages that occur as a result of population growth. An expanding population demands more land, more food, etc. A larger demand for basic resources arises due to a growing population.

b) TABLE 4:

1) Urban areas grow more rapidly (3%) than rural areas in KwaZulu-Natal.

2) Informal settlements grow more rapidly (4%) than rural settlements in KwaZulu-Natal.


1) Approximately half of the urban dwellers in KwaZulu-Natal live in informal settlements.

Urban settlements accommodate most people (54,6%) in KwaZulu-Natal.

4. a) Shortages that arise as a result of the over-utilisation of particular resources precisely because these resources are available.

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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.
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
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
characteristics of micro business
for teaching engĺish at school how nano technology help us
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
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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.
what is the actual application of fullerenes nowadays?
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.
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.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
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.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Geography grade 9. OpenStax CNX. Sep 14, 2009 Download for free at http://cnx.org/content/col11057/1.1
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