Oxygen and carbon dioxide travels to and from tiny air sacs in the lungs, through the walls of the capillaries, into the blood. Blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs.
Answer:
1.embryophyta
2.moss is a green flowerless plant that lack roots
3.found in moist shady
4.
III. enzyme pathways in the mitochondria produce ATP in a process that requires oxygen.
