“Friendly" microbes secure a place to live and grow, keeping less friendly microbes from taking control.

Is this an example of mutualism or not?

yes because this positivley affectz both friendly microbes

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)]