B as the broken down molecules can be made into useful substances for the body
Answer:
Gas exchange during respiration occurs primarily through diffusion. Gas molecules move from a region of high concentration to a region of low concentration. Blood that is low in oxygen concentration and high in carbon dioxide concentration undergoes gas exchange with air in the lungs.
Explanation:
Answer:
C
Explanation:
The claims of astrology are based on imagination rather than empirical evidence
