Sylvia700 Sylvia700

07-06-2015
Biology

contestada

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

Respuesta :

07-06-2015

The answer is D. Respiratory system = breathing system. Keep that in mind.

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07-06-2015

Its D. You Require All That To Breathe

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