4. The success of an individual in surviving and reproducing in its environment is referred to as its

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck

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)]