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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?

Assessment

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].

Memorandum

ACTIVITY1:

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.

TABLE 5:

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

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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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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