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2 votes
Oxygen in the lungs leaves the air sacs and enters the blood

veins

capillaries

User Nobilis
by
9.1k points

2 Answers

2 votes
Blood. Honestly have no clue
User Mama
by
7.6k points
4 votes

Answer:

its veins

Step-by-step explanation:

none

User Jolindbe
by
8.4k points