Oxygen enters the blood in the ?
1)bronchi
2)pharynx
3)larynx
4)alveoli
I think #4
Thanks !
If you're in Connexus, the answers to the Unit 5, Lesson 5 Test is,
1. A, B
2. D
3. B
4. A, D
5. B
6. A
7. D
8. B, C
9. B
10. C, D
11. A
12. A
13. A
14. B
15. B
I just submitted it. Sorry if I accidently got one wrong :/