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The respiratory system contains which of the following structures and organs? A. blood, blood vessels, heart B. tonsils, thymus, spleen, red bone marrow C. lymph nodes, lymph vessels D. lungs, respiratory
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May 6, 2016
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The respiratory system contains which of the following structures and organs? A. blood, blood vessels, heart B. tonsils, thymus, spleen, red bone marrow C. lymph nodes, lymph vessels D. lungs, respiratory passages, diaphragm
Biology
high-school
Buczkowski
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Buczkowski
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Its D. You Require All That To Breathe
Dmytro Grynets
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May 6, 2016
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Dmytro Grynets
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The answer is D. Respiratory system = breathing system. Keep that in mind.
George Artemiou
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May 12, 2016
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George Artemiou
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