You drink two cans of your favorite sugary soda, even
though you know this is not
healthy for you. You have to run to the bathroom before the next class period starts.

i think it is dna, i'm not totally sure but i think it might be.

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)]