Blood transports oxygen and ________ to the body's organs. N_tr_ _nts
Nutrients (chất dinh dưỡng)
The veins transport _____________ to the heart. oxyg _ n-p_ _r blood
oxygen-poor blood (máu nghèo oxy)
The arteries transport ____________ from the heart. Oxyg_n- r _ _h
Oxygen-rich (máu giàu oxy)