'Alveoli are tiny sacs clustered like grapes in these organs'
lungs
AN ORGAN-IC CATEGORY: Alveoli are tiny sacs clustered like grapes in these organs
Alveoli are tiny sacs clustered like grapes in these organs
Alveoli are tiny sacs clustered like grapes in these organs
AN ORGAN-IC CATEGORY
lungs
AN ORGAN-IC CATEGORY