Question

why dead body can't breathe?​

Answer 1

Answer:

Because it is dead. Dead thing are not alive and only the things that are alive can perform such activities such as breathing eating etc.

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Answer 2

Since every function performed to live life stops ,our heart beating and lungs also stops working.

Now , our lungs can't take Oxygen in and Carbon dioxide out .

More over since heart stops breathing ,flow of blood stops and if the flow stop blood will not reach the lungs for oxidation .

So ,no oxidation means no oxygen and no oxygen means no breathing

Hope it helps you.