A circulatory system in which the heart pumps blood to tissues throughout the body cavity is

A. a closed circulatory system.
B. a gastrovascular cavity.
C. an incomplete circulatory system.
D. a complete circulatory system.
E. an open circulatory system.


Ans: E. an open circulatory system.

Biology & Microbiology

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Amino acids include a side group as well as ________

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Biology & Microbiology