Answer:
It is called the S-A node, or rather sinus node.
Answer:
The most common growth media for microorganisms are nutrient broths and agar plates; specialized media are sometimes required for microorganism and cell culture growth.
Explanation:
Answer:
gap junctions
Explanation:
I don't know how to explain it but that's the answer
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It entera from your body to the middle and then to the back and again.
