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tekilochka [14]
3 years ago
9

Which of the following is a part of the digestive system?

Biology
2 answers:
MrMuchimi3 years ago
7 0

Answer:

saliva

Explanation:

nevsk [136]3 years ago
3 0
Saliva is a part of the digestive system. saliva contains enzymes that help start the breakdown of food in the digestive process

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9. Which is the pathway of oxygen from lungs into the body tissues?
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<em>     The other options do not show the correct order in which the oxygen travels from the alveoli to the tissues.</em>

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