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the role of the circulatory system is to transport oxygen and nutrients to all the cells in that one organism
circulatory system
Unicellulars don't have any vascular system they take food by diffusion. Small animals such as some invertebrates have open circulatory system, larger animals like vertebrate have a closed circulatory system.
They don't have any circulatory system; fluids are dispersed into the pseudocoelom.
Surface area to volume ratio
they diffrentiate
The organs of the circulatory system are the heart, blood vessels and the blood.The heart, arteries, veins, platelets, capillaries, red blood cells are in the circulatory system.These vary from organism to organism. In mammals such as humans, the circulatory system comprises the heart and blood vessels, and, strictly, the lymphatic vessels.Heart, lungs and kidneys.the heart,brain and the body hope i helped :)
Yes, it's the circulatory system.
In most cases invertebrates do not have any circulatory system. However, the few that have one have the closed circulatory system.
yea i can
No it gets what it needs from it's environment
The human organism is made up of systems. Each system supports the rest of the systems in the body. These include the skeletal system, the nervous system, and the circulatory system.