What 2 subatomic particles are found here? Charge? Size? What subatomic particles are in rings around the nucleus? Which electron- A or B- has more potential energy? Why? The shells are subdivided into _ that hold _ electrons each.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

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