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Biolgy paper 1 help!

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Steve13:
q40

bacteria increase=>dissolved oxygen decreases=>fishes die=>anaerobic bacteria increase


kidney

artery AND vein

Friends:

--- Quote from: Steve13 on June 06, 2009, 07:33:52 am ---q40

bacteria increase=>dissolved oxygen decreases=>fishes die=>anaerobic bacteria increase


kidney

artery AND vein

--- End quote ---
So which option??

XaM!!:
can anyone xplain hw kidney transport glucose by VEIN?

Jake:
does glucose pass in the vein also??

MB:
Does anyone know the answer of the one with the arrow pointing downwards only?

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