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Samenvatting Biologie Thema 6 Biodiversiteit en duurzame ontwikkeling $7.48
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Samenvatting Biologie Thema 6 Biodiversiteit en duurzame ontwikkeling

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Samenvatting Thema 6 Biodiversiteit en duurzame ontwikkeling - Biologie 4 ASO

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  • Yes
  • July 6, 2021
  • 2
  • 2020/2021
  • Summary
  • Secondary school
  • ASO
  • 4
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Biologie
Thema 6: Biodiversiteit en duurzame
ontwikkeling


Biodiversiteit: 3 niveaus
1) Op soortniveau: optelsom alle soorten in bepaald gebied
- Monoculturen nadelig  weinig biodiversiteit want beperkte
levensgemeenschap
 beperkte aantrekking planeteneters / predators + weinig variatie
voedselkeuze / nestgelegenheid / bescherming
- Chemische bestrijdingsmiddelen
 gebruik van pesticiden / herbiciden / fungiciden
 tast andere planten / insecten aan buiten de zone
 vergiftigde prooidieren en kan zelfs effect hebben op toppredators


2) Op genetisch niveau: optelsom verschillen tussen genen
- Erfelijke kenmerken worden doorgegeven via DNA; genetische
diversiteit (= verscheidenheid aan genen binnen elke soort)
- Meer genetische diversiteit (bv. planten / huisdieren)  gewenste
eigenschappen doorgeven + verbeteren


Belang genetische verscheidenheid?
- Motor van biodiversiteit
- Grote genetische biodiversiteit  beter aanpassen
- Weinig genetische biodiversiteit  kwetsbaar voor plagen




3) Op niveau van ecosystemen: optelsom ecosystemen

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