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Softa [21]
2 years ago
10

HELP ME PLSS ILL GIVE U 25 POINTS!

Biology
2 answers:
Usimov [2.4K]2 years ago
5 0
1. Closed
It keeps the blood from tongue backward up into the right atrium when the ventricle contracts

2. Lungs

3. Gives up carbon dioxide and picks up oxygen

4. can

10. The lungs
soldier1979 [14.2K]2 years ago
3 0

Explanation:

liway sm but i don't know that

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