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Social sciences

Geography

Development issues

Grade 9

Module 4

Political background

The role of technological development in solving environmental issues

Technology and the growing need for food

As the world population grows, natural resources become more strained. This means that the soil must produce even more crops to feed the population. Traditional methods of cultivating crops are no longer efficient to produce food for the entire world population. In some countries, however a surplus or overproduction of agricultural crops is presently produced (e.g. in the USA), while other countries still have a problem in respect of meeting the nutritional needs of the population (e.g. in Ethiopia, where a famine rages).

In an effort to rectify the situation, scientific methods are applied to increase the production of agricultural crops. For this, however, money, manpower, technology and research are needed. If it is successful, new cultivars may be developed, yielding higher crops than traditional crops. Certain cultivars of maize yield more heads than in the past. This in turn leads to a higher agricultural production, which means that more people can be fed. People suffering from malnutrition cannot remain healthy, continue working, and care for their families. Where people do not earn money to meet their basic needs, they cannot develop, and nor can their children. Neither can they contribute to the development their country.

Biotechnology

Biotechnology refers to scientific techniques based on a knowledge of biology. Biology studies life processes, for instance in plants. This knowledge plays an important role in the development of new crops. It may help to reduce the time and costs attached to the process of development. Other methods include the use of genes to combat soil toxicity, making plants insect-resistant, as well as increasing the nutritional value of plants.

In developing countries farmers can profit from methods such as adding a certain gene to the canola plant that produces betacarotene. This helps to replenish Vitamin A-deficiencies and thereby prevent damage to the eyes. Certain aspects related to safety and the ethics of genetic manipulation, however, still need to be clarified. Ethics deals with the moral principles of what is “right and wrong”.

The sciences also contribute to the improved management of our natural resources. In this way problems such as water shortages, the loss of fertile soil, the loss of natural trees and forests, an impairment of biodiversity, as well as the exhaustion of our fishing resources can be avoided.

Activity 1:

To find information on biotechnology and the application of scientific techniques

[[lo 2.3]

  1. Although these processes are highly scientific, it might be a good idea to ask a person specialising in this field to speak to you in clear, everyday language. Most farmers and agricultural officers are particularly good at this, while someone from a local cooperative, laboratory or agricultural school could also make a contribution.
  2. You could form small groups to conduct interviews with a number of these individuals.
  3. Posters on your findings can make an interesting exhibition for all the learners of your school, and even for neighbouring schools and members of the public.
  4. Why is biodiversity (maintaining different forms of life) so important?

Questions & Answers

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
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
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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Good
Berger describes sociologists as concerned with
Mueller Reply
what is hormones?
Wellington
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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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