Some anatomy

What is the function of each of the organs you see in the photographs?


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the kidney serve to clean the blood and to remove excess liquid, the spine serve to support the organism, and the brain is a machine to serve to connect all organism, limbs.

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The kidney serves to clean the blood and to remove excess liquid, the spine serves to support the organism body, and the brain is a machine to serve to connect all the whole organism, and its limbs.

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Very good. "serves to" is very Italian. Normally, we would say "the kidney is for cleaning the blood, or it cleans the blood,  the spine supports the body, and so on. But you wrote good English. Well done ;-)