6. Boundaries based on the median-line principle are generally associated with (A) major highways (B) converging ethnic territories (C) unsettled frontier zones (D) bodies of water (E) mountain ranges

mammal

explanation:

b. read the phase at the intersection of any given temperature and pressure.

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)]