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Activity 5:

To use communication networks for global research

[lo 2.2]

The enormous expansion of communication networks over the past few years can be applied for further global research on the agricultural sector. Fortunately information on the cultivation of a specific plant can be shared worldwide with other farmers who wish to plant similar crops, or who experience similar problems.

  1. Write a science fiction story or drama about what would happen if agriculture were to disappear, and land is used only for industrial purposes or housing.
  2. Have you noticed if the agricultural sector in your area is endangered in any way?
  3. Why do people sometimes sell their valuable agricultural land?

Activity 6:

To establish if people are aware of aspects that impact negatively on the environment

[lo 2.2]

Environmental aspects that urgently need to be addressed, include poverty, deterioration of the environment, the erosion of genetic resources, as well as uncertainty around the availability of food. These factors influence a country’s development negatively and they are a disadvantage to the inhabitants. These factors do not change of their own accord. The inhabitants of each country must be made aware of these issues and they must have a desire to do something about it. Every person should develop a “green conscience”.

  1. How do you understand the expression “green conscience”?
  2. How can you contribute towards combatting these aspects that have such a negative impact on the environment?

Activity 7:

To discuss scientific development which ensures that food production remains in line with the population growth

[lo 2.3]

Science is regarded as an important factor in solving the problems already mentioned. Recently there were three important scientific developments that may help to ensure that food production remains in line with the population growth:

- The responsible use of bio-technology (no excessive or harmful use of fertilizers, toxic substances, genetic manipulation, etc).

- Better management and control of the natural resources (protection, conservation and development of water, land, trees, plants and crops).

- Application of the information revolution (the application of new information and findings that become available).

Give examples of the above to show that this knowledge can be applied in practice in order to make a difference.


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];
1.7 reports and formulates knowledge obtained during the research by means of an argument and interpretation based on sources of information; uses maps, diagrams and graphics; uses, where necessary, computers in the presentation [communicating the answer].
LO 2
GEOGRAPHICAL KNOWLEDGE AND UNDERSTANDING The learner can demonstrate geographical and environmental knowledge and understanding.
This is clear when the learner:
2.1 gives a well-argued explanation of some approaches to development [people and places];
2.2 identifies ways in which Science and Technology have a positive and a negative influence on development [people and resources];
2.3 explains how sustainable [people and environment development can have a positive influence on people, places and environments].

L O 3

EXPLORING THE ISSUES The learner can take informed decisions on social and environmental issues and problems

This is clear when the learner:

  1. identifies social and environmental conflicts in South Africa and compares it with other contexts [identifies the issue];

3.2 identifies factors that have an influence on selected social and environmental disputes, including those regarding rights; gender; social, economical and political claims within a specific context [factors affecting the issues];

  1. analyses the reason for disputes or conflicts [makes choices];

3.4 takes informed decisions on various solutions to social and environmental conflicts [makes choices].



d) - Research purposes

- Preservation of the different species

- Conservation for posterity

- Ethic as well as aesthetic reasons


It means that the discerning use of pesticides contains major advantages for the agricultural sector, but the indiscriminate use unfortunately can cause great damage to ecosystems.

How does it work? Ecosystems consist of different food chains and food webs. Your teacher will explain it to you.

These food chains consist of different trophic levels.

EXAMPLE : grass - sheep - man


grass - locust – frog - snake - vulture

The pesticides are applied to the plants to exterminate the locust plague. Frogs then eat the poisoned locusts and in turn they are poisoned, etc. In this way the poison spreads through the

trophic levels until the birds of prey are exterminated. It is a known fact that pesticides are becoming more concentrated as they move upwards through the trophic levels.

  • In this manner a whole ecosystem can be destroyed.
  • Soil can be contaminated by the rotting carcases.
  • Water sources can become polluted.
  • Other creatures can now pester farmers because the birds of prey have been exterminated.


  1. Yes
  2. Yes


c) - Negative factors such as farm murders, high input costs of farming, over- production, low value of the rand, low prices of agricultural produce, lack of services, etc.

- Make a profit

- Urbanisation


  1. Must be aware of the importance of the preservation of vegetation, animal life, ecosystems, etc. Be aware of conservation.
  • Do not pollute
  • Do not waste
  • Recycling
  • Saving
  • Educational programmes

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
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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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