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Biology 10 Online
OpenStudy (anonymous):

Which system controls your sleeping pattern? A.Circulatory System B.Endocrine System C. Nervous System D. Respiratory System Thanks ;)

OpenStudy (shreehari499):

Your Nervous System controls your sleeping pattern...:)

OpenStudy (anonymous):

THANK YOU SO SO SOS SO -goes on and on and the you slap me- MUCH

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