The digestive system breaks down food, the respiratory system takes in oxygen, and the cardiovascular system delivers the oxygen and food to the cells.
I think it's glucose. I hope I helped.
Continental plate moving on the sea floor.
Two equally frequent gametes containing only parental allele combinations and no recombinant gametes
Blood is pushed through the organism by the heart, and brings nutrients and oxygen to our tissues. It also takes away waste and carbon dioxide from tissues.
