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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 can chip be made from sand
Eke Reply
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
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
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
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
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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