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Sosiale wetenskappe: aardrykskunde

Graad 9

Ontwikkelingsvraagstukke

Module 4

Die rol van tegnologiese ontwikkeling in die oplossing van omgewingsvraagstukke

1. Die rol van tegnologiese ontwikkeling in die oplossing van omgewingsvraagstukke

1.1 Tegnologie en die toenemende vraag na voedsel

Namate die bevolkingsgetalle in die wêreld toeneem, word daar meer en meer druk geplaas op die natuurlike hulpbronne. Dit beteken dat die grond al hoe meer produkte moet lewer om die bevolking te voed. Tradisionele metodes vir die verbouing van gewasse is nie meer doeltreffend om die bevolking van die wêreld te voed nie. In sommige lande word vandag ‘n surplus of oorskot aan landbouprodukte geproduseer (bv. die VSA), terwyl daar in ander lande steeds ‘n groot probleem bestaan ten opsigte van die voedselbehoeftes van die bevolking (bv. in Ethiopië, waar die mense verhonger).

Om hierdie toestand te probeer oplos, word wetenskaplike metodes aangewend om die produksie van landbouprodukte te verhoog. Dit kos egter baie geld, mannekrag, tegnologie en navorsing. Indien dit suksesvol is, word nuwe kultivars byvoorbeeld ontwikkel wat ‘n hoër opbrengs lewer as die tradisionele gewasse. Vandag kry ons byvoorbeeld mielies wat baie meer koppe lewer as in die verlede. Dit lei tot hoër landbouproduksie wat meer mense kan voed. Mense wat ondervoed is, kan nie gesond bly, werk, en hulle gesinne versorg nie. Waar mense nie geld verdien om in hul lewensbehoeftes te voorsien nie, kan hulle ook nie hulself en hul kinders verder ontwikkel of bydra tot die land se vooruitgang nie.

Biotegnologie

Biotegnologie is wetenskaplike tegnieke wat op die kennis van biologie gebaseer is. Die biologie bestudeer die prosesse van lewe, soos bv. in plante. Hierdie kennis speel ‘n belangrike rol by die ontwikkeling van nuwe gewasse. Dit kan help om die tyd en koste verbonde aan die proses van ontwikkeling te verminder. Daar word ook gebruik gemaak van metodes om gene te gebruik wat grondvergiftiging teenwerk, plante bestand maak teen insekte, asook die voedselwaarde van plante verhoog.

Ook in die ontwikkelende lande kon boere voordeel trek uit die metodes soos die byvoeging van ‘n sekere geen in die canolaplant, wat betakerotien vervaardig. Dit help om Vitamine A-tekorte aan te vul, en oogskade te verhoed. Sekere aspekte rondom veiligheid en die etiek van genetiese manipulasie moet egter nog uitgestryk word. Etiek het te doen met die morele beginsels van “reg en verkeerd”.

Die wetenskap kan ook behulpsaam wees om beter bestuur van ons natuurlike hulpbronne te verseker. Sodoende kan probleme soos watertekorte, die verlies aan vrugbare grond, die verlies aan natuurlike bome en bosse, die verlies van biodiversiteit, asook die uitputting van ons visbronne verhoed word.

Aktiwiteit 1:

Om inligting te bekom oor biotegnologie en die aanwending van wetenskaplike tegnieke

[lu 2.3]

  1. Hoewel dit hoogs wetenskaplike prosesse is, kan julle moontlik iemand in hierdie vakgebied vra om vir julle iets hiervan in eenvoudige taal te kom verduidelik. Boere en landboubeamptes weet meer hiervan. Iemand van ‘n plaaslike koöperasie, laboratorium of landbouskool sal ook kan help.
  2. Miskien kan julle in groepe ‘n aantal onderhoude met sulke persone voer.
  3. Plakkate oor die bevindinge kan vir die hele skool en die publiek aangebied word.
  4. Waarom is biodiversiteit (die behoud van verskillende vorme van lewe) belangrik?

Questions & Answers

differentiate between demand and supply giving examples
Lambiv Reply
differentiated between demand and supply using examples
Lambiv
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Lambiv
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Venny Reply
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Eliyee
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Eliyee
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WARKISA
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Lambiv
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Aster Reply
appreciation
Eliyee
explain perfect market
Lindiwe Reply
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
Ezea
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Shukri Reply
other things being equal
AI-Robot
When MP₁ becomes negative, TP start to decline. Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Kelo
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Shukri
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Shukri
what is monopoly mean?
Habtamu Reply
What is different between quantity demand and demand?
Shukri Reply
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
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Shukri
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Fiker Reply
Economic growth as an increase in the production and consumption of goods and services within an economy.but Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
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Jabir
What do you think is more important to focus on when considering inequality ?
Abdisa Reply
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Awais Reply
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
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Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50. A,Calculate quantities of x and y which maximize utility. B,Calculate value of Lagrange multiplier. C,Calculate quantities of X and Y consumed with a given price. D,alculate optimum level of output .
Feyisa Reply
Answer
Feyisa
c
Jabir
the market for lemon has 10 potential consumers, each having an individual demand curve p=101-10Qi, where p is price in dollar's per cup and Qi is the number of cups demanded per week by the i th consumer.Find the market demand curve using algebra. Draw an individual demand curve and the market dema
Gsbwnw Reply
suppose the production function is given by ( L, K)=L¼K¾.assuming capital is fixed find APL and MPL. consider the following short run production function:Q=6L²-0.4L³ a) find the value of L that maximizes output b)find the value of L that maximizes marginal product
Abdureman
types of unemployment
Yomi Reply
What is the difference between perfect competition and monopolistic competition?
Mohammed
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Source:  OpenStax, Aardrykskunde graad 9. OpenStax CNX. Sep 14, 2009 Download for free at http://cnx.org/content/col11054/1.1
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