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Xarxes tròfiques
En relació a l’alimentació es formen diverses cadenes o
xarxes tròfiques (qui es menja qui).




Font
http://www.school-portal.co.uk/GroupRenderCustomPage.asp?
GroupID=658842&ResourceId=2748894
I com s'anomenen?




Font:
http://jacqueline110gs.edublogs.org/2010/10/27/go-with-the-
flow/
I què passaria si...



      a) s’extinguissin els productors?

      b) s’extinguissin els consumidors primaris?

      c) s’extinguissin els consumidors terciaris?

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Xarxes trofiques