What would happen if the angle of the slope was increased to an angle steeper than 30 degrees? What would happen if the amount of vegetation was cut by 50 percent?

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)]