Circulation can refer to different systems in Biology, but in general terms, the circulatory system in mammals is closed. This means that blood is contained within vessels and circulates through a network of arteries, veins, and capillaries. In contrast, some organisms, like certain invertebrates, have an open circulatory system where blood flows freely through cavities.
"Show" is open, "and" is closed. O- is open, -pen is closed. "Closed" is closed.
Both open syllables.
Both closed.
Closed
One closed, one open.
Closed. It also has a water-vascular system. :)
Ok
Brown bear have a close circulation system
it is close so then the blood can float in it nice and easy
fishes do have parallel circulation
Closed circulation is a phrase that the person asking this question doesn't know how to use in a sentence
"Show" is open, "and" is closed. O- is open, -pen is closed. "Closed" is closed.
In an open container because the warm air can melt the ice faster.
Yes, they do.
Its sort of a cross between the two, but is mostly closed. This due to the different stages of evolution etc. Not so. Fish have a closed circulatory system, Arteries carry blood from the heart and veins return the blood to the heart.
a construction site?
The opposite of the adjective closed is open. The opposite of the verb closed is opened.