What factors change in a demographic transition? *
5 points
immigration and emigration rates
birth rates and death rates
climate and immigration rates
climate and economic factors

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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)]