Question

difference bw single circulation and double circulation in human beings

Answer 1

in single circulation blood flows from heart one time in single cycles.eg pisces

but in double circulation blood flows from heart twice in single cycle.eg mammals

Answer 2

Differences between single circulation and double circulation:
  In single circulation, the blood passes through the heart only once.
  In the case of double circulation, blood passes twice.

  Example for single circulation: FISH
  Example for double circulation: HUMAN BEINGS


HOPE THIS HELPS!!