Which change usually accompanies a cold spell in minnesota

Polar jet streams moving south

Explanation:

Explanation:

The arctic air stream or polar jet stream is the strongest of its kind. This jet stream pass through Minnesota (image attached) changing its weather temperature, which is stronger in winter, because the difference in temperature is higher, and it drives it faster.

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)]