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Summary Geskiedenis van lewe op aarde

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15-07-2026

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2024/2025

Hierdie opsomming bevat volledige verduidelikings en beskrywings van die Lewenswetenskap-hoofstuk genaamd “Geskiedenis van lewe op aarde”.Die opsomming bevat kleurvolle prente en illustrasies wat die leerwerk ń bietjie meer interessant maak.

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geskiedenis van lewe op aarde
eras
-prekambriese
-pleosoïese
-mesosoïese
-sensoïese

vandag

- mariene alge vorm 650 miljoen jaar gelede,suurstof vlakke styg
- angliosperme = blomplante
- diversifiseer= groter verskeidenheid

ystydperke hede
5 - huidige
4- karoo
3- Andean-Saharan
Z- startian \ Marinoan
I- huroniese

kontinentale drywing
kontinentale drywing- tektoniese plate dryf op vloeibare magma en laat
kontinente verskuif [ steeds 2 cm per jaar]

pangea [superkontinent] = laurasië t godwana
*** 25 of 64

, aardbewings = tektoniese plate stamp teen mekaar
vulkaniese aktiwiteit= magma word tussen tektoniese plate uitgeforseer
onder hoë druk

biogeografie

biogeografie- ooreenkomste in spesies [ lewend of fossiele] op
verskillende kontinente dui daarop dat die spesies reeds bestaan het voor
die geografiese skeiding plaasgevind het

fossiele

fossiel- enige heel skelet of gedeeltes daarvan, of spoor van 'n organisme
wat dood is en behoue gebly het in die rots-aardkors
paleontologie- die studie van fossiele en die fossielrekord [ paleontoloog =
persoon]

-nut van fossiele = gee geleentheid om die biodiversiteit te bestudeer wat
voorheen op aarde bestaan het,vanaf die ontstaan van lewe, ongeveer
3500 miljoen jaar gelede

fossielrekord- word gebruik om die veranderinge in lewensvorme op aarde
oor baie lang tydperke te bestudeer.

tipes fossiele

>oorspronklike liggaam word bewaar- bv mammoet in ys in Siberië en
insekte wat in amber [versteende boomgom] vasgevang word
*** 26 of 64

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Institution: 10th Grade
Course: Life Sciences
Schooljaar: 103

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Uploaded on: July 15, 2026
Number of pages: 11
Written in: 2024/2025
Type: SUMMARY

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Summary Geskiedenis van lewe op aarde

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