Question

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what is machine?​

Answer 1

Answer:

Simple squamous epithelium

This type of epithelia lines the inner surface of all blood vessels (endothelium), forms the wall of alveolar sacs in the lung and lines the body cavities (mesothelium). The primary function of simple squamous epithelia is to facilitate diffusion of gases and small molecules.

Explanation:

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Answer 2

Answer:

a piece of equipment with moving parts that is designed to do a particular job. A machine usually needs electricity, gas, steam, etc. in order to work