Answer | Crossword Clue |
---|---|
INTAKES | Passageways for air. |
DUCTS | Passageways for heat or air |
INTAKES | Air passageways |
DUCTS | Air passageways |
DUCTS | Air-conditioning passageways |
alveolus | air cell of the lungs, formed by the terminal dilation of tiny air passageways |
alveoli | air cell of the lungs, formed by the terminal dilation of tiny air passageways |