For each picture shown, choose the level of organization depicted.

21 stacks

step-by-step explanation:

divide 630/30

21 stacks

enjoy!

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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