Asound that's produced by a single wave at a constant frequency and with no overtones is called
a. a pure sound.
b. a mellow sound.
c. an average sound.
d. a discordant sound.

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)]

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully