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What maintains the concentration gradient across respiration membranes? A. Ventilation B. Cartilage C. Spiracles D. Cohesion
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4 votes
What maintains the concentration gradient across

respiration membranes?
A. Ventilation
B. Cartilage
C. Spiracles
D. Cohesion

User Pathogen David
by
8.9k points

1 Answer

3 votes
spiracles which is c
User Dlasalle
by
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