Egreat plains region is divided from the north central plains by the a. caprock escarpment. b. balcones escarpment. c. coastal plains. d. davis mountains.

The answer is a, because the caprock is in the north plains

What document are you referring to

The changes to agriculture in the united states since 1900 is that increased mechanization has increased food production, thereby increasing the need for labor. there has been an increased need for higher speeds of food production due the fact that the population in the united states continues to rise.