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What are alveoli? A. Part of a red blood cell B. Air sacs used during respiration C. Tubes that connect the heart to the lungs D. Carbon dioxide molecules
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3 votes
What are alveoli?

A. Part of a red blood cell
B. Air sacs used during respiration
C. Tubes that connect the heart to the lungs
D. Carbon dioxide molecules

User Passion
by
7.4k points

2 Answers

3 votes

Answer:

B

Step-by-step explanation:

Air sacs of the lungs used during respiration

User Luke West
by
6.8k points
7 votes
The answer is B; Air sacs used during respiration
User Vambo
by
7.4k points
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