a) Single circulatory system is a system in which blood passes only once through the heart to complete its circuit in the body.
b) Fish, earthworm
c) Ostium
johnmulu answered the question on May 3, 2017 at 12:13
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Date posted: May 3, 2017. Answers (1)
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Date posted: May 3, 2017. Answers (1)
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