 <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). <yor> Ọ́síjìn wulẹ̀ jẹ́ ọ̀kan lára àwọn nǹkan tí ẹ̀jẹ̀ ń gbé kiri. Èémí àti ìtọ̀sẹẹsẹ ẹ̀jẹ̀ ń jẹ́ kí afẹ́fẹ́ ọ́síjìn máa lọ sáwọn sẹ́ẹ̀lì inú ara. Èémí ń pèsè ohun kan tí ẹ̀jẹ̀ ń gbé kiri. Ìdáhùn: (A). 