 
 <translate> Oxygen is just one substance transported by the blood. Breathing and circulation allow oxygen to be transported to the body's cells. Breathing provides one substance transported by the blood. The answer: (A). <ibo> Oxygen bụ nanị otu n'ime ihe ndị ọbara na-ebu. Ikuku na mgbasa ọbara na-eme ka o kwe omume ibuga ikuku oxygen n'ime mkpụrụ ndụ nke ahụ. Ikuku na-enye otu ihe nke ọbara na-ebugharị. Azịza ya bụ: (A). 