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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

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
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
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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
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