They are different in structure as one serves in an open system (lymphatic system) while the other serves is closed system (circulatory system).
Hope this helps!
*This question is common, so this answer I use a lot. I copied my own work.*
AO, BO. cause thats makes it where the childern can have all blood types
New Moon. This is because the light from the sun is being pointed at the other side of the moon ( the side we can not see ).
Answer:
the variable that is being measured
