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1.12 Om konseptuele kennis toe te pas, afleidings te maak en

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Natuurwetenskappe

Lewe en lewenswyse

Opvoeders afdeling

Memorandum

1. Elke organisme is by 'n bepaalde leefwyse aangepas. Sodoende kan baie organismes saam leef sonder om in alle opsigte te kompeteer.

2. Organismes verander voortdurend om beter by hul omgewing aan te pas.

3. Veranderinge in hul omgewing.

4. Die temperatuur is besig om te styg.

5. Nee. Sommiges gaan waarskynlik uitsterf.

6. Hulle sal moet aanpas by die veranderinge. Hulle vermoë om aan te pas, hang af van die graad en tempo van verandering in hul omgewing.

Uitsterwing van dinosourusse: Gesels met die leerders oor drastiese veranderinge soos die ystydperk, die spoed waarteen dit gebeur het, ensovoorts. Laat hulle inligting versamel en klas toe bring.

Die mens kan daartoe bydra deur die balans in die natuur te versteur, bv. deur die uitroei van woude, besoedeling, uitroei van bepaalde diersoorte.

Leerder afdeling

Inhoud

Aktiwiteit: om konseptuele kennis toe te pas, afleidings te maak en voorspellings te waag [lu 2.3, lu 2.4]

Verskeidenheid en verandering

Jy weet nou dat daar ‘n wye verskeidenheid plante en diere in ekosisteme voorkom. Probeer die volgende vrae beantwoord:

1. Hoekom is daar ‘n verskeidenheid plante en diere (hoekom verskil plante van mekaar en hoekom verskil diere van mekaar)?

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2. Gaan die plante en diere wat vandag leef vir altyd onveranderd bly of gaan hulle mettertyd verander? Verduidelik jou antwoord.

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3. Wat veroorsaak dat plante en diere verander?

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4. Noem een nie-lewende faktor wat tans besig is om te verander en wat uiteindelik die aard van ekosisteme regoor die wêreld gaan laat verander.

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5. Gaan al die plante en diere die verandering oorleef? ________________________

Questions & Answers

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
Got questions? Join the online conversation and get instant answers!
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Source:  OpenStax, Natuurwetenskappe graad 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
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