<< Chapter < Page Chapter >> Page >

Sosiale wetenskappe: geskiedenis

Graad 8

Grond en mag

Module 6

Die industriële rewolusie : landbou

Die Industriële Revolusie: Landbou

Op die verbetering in vervoer en paaie, het verstedeliking, toename in bevolking en ‘n styging in die lewenstandaard van die mense gevolg. Om meer en beter voedsel te voorsien aan die groeiende bevolking, was ‘n uitdaging vir die landboubedryf.

Robert Bakewell het in Dishley, in die streek Leicester, met skape en beeste geboer. Hy het besef dat vleisproduksie net voldoende sou wees indien die hoeveelheid en die kwaliteit daarvan kon verbeter. Die diere moes gouer markgereed wees en slegs tevrede kopers verseker die beste markpryse. Die gewildste wolskape was op hierdie stadium maer, langbeenskape wat met min kos kon klaarkom.

Bakewell het na eksperimentering ‘n skaap met ‘n groot karkas en baie goeie vleis geteel, wat binne twee jaar markgereed was. Hierdie ras, bekend as die Nuwe Leicesters was dus dubbel so winsgewend as die vorige skaapras wat eers na drie of vier jaar markgereed was. Bakewell was een van die eerste boere wat die waarde van wetenskaplike en gekontroleerde besproeiing van gewasse besef het. Hierdie navorsing was noodsaaklik omdat vleisproduksie nou belangriker geraak het as handel met wol of skaapvelle. Bakewell se eksperimentering met skaaprasse het dus gelei tot navorsing in dierevoer. Ook in beesteling het hy gekonsentreer op eienskappe soos kwaliteit (gehalte) en kwantiteit (hoeveelheid) ten opsigte van vleisproduksie. Sy eksperimentering is nog verder uitgebrei tot ‘n kleiner karperd wat nuttiger was as die groter diere.

  • Kyk na die volgende DIAGRAM van vleisproduksie te koop aangebied by die Smithfield-mark.
1710 1795
Skape 12 kg 35 kg
Beeste 150 kg 360 kg
  • Bestudeer die diagram op die vorige bladsy en antwoord dan die volgende vrae:

1. Het die skaapvleisproduksie vermeerder? Bewys jou antwoord.

2. Het die skaapvleisproduksie meer toegeneem as die beesvleisproduksie?

Bewys jou antwoord.

3. Kan jy van hierdie diagraminligting aflei dat die Britte meer van beesvleis as van skaapvleis gehou het? Verstrek minstens EEN rede vir jou antwoord.

LU 1 AS 1.3

Hoe lyk wetenskaplike navorsing en eksperimentering in die landbou vandag?

Wat is kloning?

  • Dit is ‘n produk van biotegnologie, waardeur selle of ‘n hele dier vervaardig word deur DNA van een ouerdier te gebruik, sonder dat die gewone normale geboorte- en/of groeiproses gevolg word. Die kloon het dan dieselfde DNA as die ouer.

Is kloning onnatuurlik?

  • Nee, klone word dikwels op natuurlike manier geproduseer as identiese tweelinge.

Werk die kloningsproses elke keer?

  • Nee, die skaap Dolly was die eerste geslaagde soogdierreproduksie. Dolly is gemaak van ‘n normale volwasse sel, in hierdie geval uit die uier van ‘n ooi. Meer as 200 pogings om Dolly te maak het misluk .

Is klone normale, gesonde diere?

  • Bokke, skape, koeie en muise is reeds gekloon. Dolly blyk gesond te wees, maar wetenskaplikes vermoed dat gesondheidsprobleme en vroeë veroudering by die klone kan voorkom.

Waar kry ‘n mens meer inligting oor die nuutste tegnologie?

Questions & Answers

find the 15th term of the geometric sequince whose first is 18 and last term of 387
Jerwin Reply
I know this work
salma
The given of f(x=x-2. then what is the value of this f(3) 5f(x+1)
virgelyn Reply
hmm well what is the answer
Abhi
how do they get the third part x = (32)5/4
kinnecy Reply
can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
hmm
Abhi
is it a question of log
Abhi
🤔.
Abhi
I rally confuse this number And equations too I need exactly help
salma
But this is not salma it's Faiza live in lousvile Ky I garbage this so I am going collage with JCTC that the of the collage thank you my friends
salma
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
hii
Uday
hi
salma
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris 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, Geskiedenis graad 8. OpenStax CNX. Sep 12, 2009 Download for free at http://cnx.org/content/col11043/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Geskiedenis graad 8' conversation and receive update notifications?

Ask