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which part of the human body is more complex.the heart or the circulatory system.explain the answer

Sagot :

ZARINAMAYORAYUBIN

Answer:

For more complex organisms, diffusion is not efficient for cycling gases, nutrients, and waste effectively through the body; therefore, more complex circulatory systems evolved. ... In an open system, an elongated beating heart pushes the hemolymph through the body and muscle contractions help to move fluids

Explanation:

i'm not sure :)

MIGUELMERCADOIN

Heart

Because the heart is the central of circulatory system. It fist sized pump that circulates blood throughout our body.

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