<< Chapter < Page Chapter >> Page >

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.

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];
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].

Memorandum

ACTIVITY 1:

d) - Research purposes

- Preservation of the different species

- Conservation for posterity

- Ethic as well as aesthetic reasons

ACTIVITY 3:

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

or

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.

ACTIVITY 4:

  1. Yes
  2. Yes

ACTIVITY 5:

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

ACTIVITY 7:

  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

so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
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
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Geography grade 9. OpenStax CNX. Sep 14, 2009 Download for free at http://cnx.org/content/col11057/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Geography grade 9' conversation and receive update notifications?

Ask