Biology

Noemi Ryan

21 December, 13:54

Multiple Choice

Aclosed circulatory system is one in which

O

A. blood spreads freely throughout all of the body's tissues and organs.

0

B. blood flows through a system of blood vessels throughout the body,

Cblood travels through blood vessels into cavities called sinuses.

D. blood is pumped through a system of blood vessels and air sacs.

+5

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