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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

what is the meaning of function in economics
Effah Reply
Pls, I need more explanation on price Elasticity of Supply
Isaac Reply
Is the degree to the degree of responsiveness of a change in quantity supplied of goods to a change in price
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Discuss the short-term and long-term balance positions of the firm in the monopoly market?
Rabindranath Reply
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Afran
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A firm is a business entity which engages in the production of goods and aimed at making profit.
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What is autarky in Economics.
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So how is the perfect competition different from others
Rev Reply
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1
Naziru
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Anna
The short run is a period of time in which the quantity of at least one inputs is fixed...
Anna
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Elacisity
salihu
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It will creates rooms for an effective demands.
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babsnof
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eshita
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Economics is a science which study human behavior as a relationship between ends and scarce means which has an alternative use.
Mr
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babsnof
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Debless Reply
Demand refers to the quantity of products that consumers are willing to purchase at various prices per time while Supply has to do with the quantity of products suppliers are willing to supply at various prices per time. find the difference in between
Saye
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demand curve shifts to the right when there's an increase in price of a substitute or increase in income
kin
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freshwater
the Law of supply: states that all factor being equal, when the price of a particular goods increase the supply will also increase, as it decreases the supply will also decrease
kin
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kin
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Cali
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Sule
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Akiti
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Nelly
opportunity cost: is a forgone alternative
kin
Monopoly is where is one producer produces a given product with no close substitute
James
what is income effect?
Qwecou Reply
if you borrow $5000 to buy a car at 12 percent compounded monthly to be repaid over the next 4 year what is monthly payment
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Researchers demonstrated that the hippocampus functions in memory processing by creating lesions in the hippocampi of rats, which resulted in ________.
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The formulation of new memories is sometimes called ________, and the process of bringing up old memories is called ________.
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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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