Question

UUU 6.Lungs are full of tiny air spaces called​

Answer 1

Answer:

I think alveoli is answer

Answer 2

Answer: The bronchioles end in millions of very tiny air sacs called alveoli. Your airways are lined with very tiny hairs. Your airways also make mucus that coats their lining. Together, the hairs and mucus filter and trap dust and germs so they don't get into your lungs

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