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inna [77]
3 years ago
5

Multiple choice what is the ratio of compressions to breah

Biology
1 answer:
Karolina [17]3 years ago
5 0
30 chest compressions to 2 rescue breaths 
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Both structures are reinforced by three connective blades, called meninges. They are: dura mater, arachnoid and pia mater. Between the last two there is a fluid that is responsible for the nutrition of the CNS and the minimization of possible trauma caused by mechanical shocks.

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