Answered

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What is the function of the capillaries?
A. They have walls only one cell thick to allow diffusion
B. They contain valves to prevent blood flowing in the wrong direction
C. They have walls with multiple cells to cope with high pressure
D. They have thick and elastic walls to cope with high pressure

Sagot :

bogartqtt

Answer:

THE ANSWER IS B

Explanation:

THAT'S THE ANSWER

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