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. Blood leaves the heart through the aortic valve, into the aorta and to the body.
Answer:
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Explanation:
need the rest of the question
Answer:
Energy stored in plants is transferred to humans and animals that eat them
Explanation:
Answer:
the chloroplasts in the cells of the leaf