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Natuurwetenskappe

Ekosisteem en omgewingsbalans

Opvoeders afdeling

Memorandum

(a) ‘n Woud is ‘n stuk land oortrek met digte bome, struike, varings, ens., en diere. Hierdie plante en diere leef almal saam in die digte bosse.

Opdrag 1:

f)

-boom (produseerder)

-muis (primêre verbruiker)

-uil (sekondêre verbruiker)

-jakkals (tersiêre verbruiker)

Leerder afdeling

Inhoud

1. Inleiding

'n Ekosisteem word gevorm deur alle lewende organismes wat mekaar en hul omgewing onderling beïnvloed.

Die woord ekosisteem is afkomstig van die Griekse woord "oikos", wat huis of huishouding beteken. Net soos lede van 'n gesin saamwoon en mekaar en die gemeenskap ondersteun en beïnvloed (en op hul beurt daardeur geaffekteer en beïnvloed word), so leef organismes saam, plant voort en is vir kos van mekaar afhanklik. Daar is dus 'n hegte verhouding tussen organismes en die grond, son, water en lug.

Aktiwiteit: om ‘n duidelike begrip te kry van wat ‘n ekosisteem is [lu 1.3]

Kom ons bestudeer 'n voorbeeld van 'n ekosisteem:

(a) Wat is 'n woud?____________________________________________________

_____________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

'n Woud is baie meer as net 'n groot stuk land wat oortrek is met bome. Struike, wingerde, varings, mos en paddastoele groei in die skadu van die bome. Baie voëls, soogdiere, reptiele, amfibieë en insekte word in 'n woud aangetref. 'n Woud bestaan dus uit al hierdie plante en diere wat saamleef.

Die diere is van die plante afhanklik vir kos, terwyl die plante sonlig, water, minerale en koolstofdioksied gebruik om voedsel vir hulself en die ander organismes in die woud te vervaardig.

Die lewende organismes (plante en diere) tesame met die nie-lewende omgewing (lug, water, son en grond) vorm 'n ekosisteem.

(b) Tabuleer 'n voorbeeld van elk van die volgende wat in 'n woud gevind word.

Spesie My voorbeeld van 'n ....
voël __________________________
soogdier ________________________
reptiel ________________________
insek ________________________
amfibie ________________________

(c) Teken nou die vyf voorbeelde in die skets om dit te voltooi!

(d) Die Ekosisteemkonsep

Die interaksie tussen organisme en omgewing lei tot die ekosisteemkonsep, wat die interaksie tussen materie, energie en organisme noukeurig verwerk.

‘n ekosisteem

(e) Hoe groot is 'n ekosisteem?

'n Ekosisteem kan enige grootte wees, van 'n poel water op die sypaadjie tot die hele reënwoud in die Amasone of 'n nog groter gebied.

'n Woud, onder andere, vol bome, plante insekte en voëls, is 'n ekosisteem van sekere soorte organismes wat 'n sekere omgewing bewoon. Net so is 'n rots wat in die skadu van die woud staan en oortrek is met mos, rotsplante, inseklarwes en honderdpote ook 'n ekosisteem. Die sisteem is dus geïntegreer, met dele wat intiem met mekaar verband hou. Enigiets wat 'n deel van die sisteem affekteer, affekteer ook die res.

Opdrag 1:

  1. Bestudeer die onderstaande skets van 'n woudekosisteem:

Noem die:

produseerder:: _________________________________________________________

primêre verbruiker: _____________________________________________________

sekondêre verbruiker:: __________________________________________________

tersiêre verbruiker: _____________________________________________________

Primêre beteken eerste.

Sekondêre beteken tweede of minder belangrik.

Tersiêre beteken in hierdie geval derde.

2. Die ekosisteem

Dit is die lewende organismes tesame met die ________________________________

wat in 'n onafskeidbare, interaktiewe verhouding tot mekaar staan.

Die lewende deel kan soos volg onderverdeel word:

(a) voedselproduseerders meestal groen plante

(b) voedselverbruikers is makroverbruikers (diere wat ander organismes eet)

of

ontbinders (bakterieë of swamme wat dooie organismes opbreek)

Assessering

Leeruitkomste 1: Die leerder is in staat om met selfvertroue op weetgierigheid oor natuurlike verskynsels te reageer, en om binne die konteks van wetenskap, tegnologie en die omgewing verbande te ondersoek en probleme op te los.

Assesseringstandaard 1.3: Dit is duidelik wanneer die leerder data evalueer en bevindings kommunikeer.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
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
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
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
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Natuurwetenskappe graad 6. OpenStax CNX. Sep 17, 2009 Download for free at http://cnx.org/content/col11080/1.1
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