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Ahat [919]
3 years ago
9

What membranes lines the cavities and tubes in the digestive and respiratory system

Biology
1 answer:
Gwar [14]3 years ago
7 0
Firstly they are not membranes and they are villi's which increase the surface area during digestion
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Explanation:

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alex41 [277]
<h2>a DNA double helix</h2>

Explanation:

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aliina [53]

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Learn more about chemosynthesis and marine snow refer:

brainly.com/question/4821668

#SPJ4

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