Answer:
Answer Key:
Hold up the bunch of grapes.let bunch of grapes represent the respiratory or breathing system?
Explanation:
Explanation Key:
The alveoli form clusters, called alveolar sacs, that resemble bunches of grapes. By the same analogy, the alveolar ducts leading to the sacs are like the stems of individual grapes, but, unlike grapes, the alveolar sacs are pocketlike structures made up of several individual alveoli.