What's the difference between an open and closed circulation system? I understand how a closed circulation system works because it's in blood vessels but what about open? How can it just flow around the body within nothing to contain it??
Sorry you've not had any responses about this. Are you sure you’ve posted in the right place? Posting in the specific Study Help forum should help get responses.
I'm going to quote in Tank Girl now so she can move your thread to the right place if it's needed.