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11 August, 19:09

Which animal has a single-loop circulation? A. human B. fish C. housefly D. earthworm E. octopus

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  1. 11 August, 19:18
    0
    The correct answer is; B. fish

    Fish have a single loop circulation.

    Single loop circulation is the type of circulatory system that occur in fishes. Single loop circulation is simple. There is passage of blood only once through the heart in each complete cycle of the body. The blood flows from the heart through the gills, through the body and back to the heart. In single loop circulation, blood pressure is limited because of the frail nature of the tiny capillaries in the gills.
  2. 11 August, 19:37
    0
    the answer would be B. fish

    have a wonderful day
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