Iam the largest mountain system in north america. i extend from western canada, through the western united states, to mexico

Topographic maps are used to measure a-composition b-movement c-elevation d-texture

Which of the following statements best characterizes changes to agriculture in the united states since 1900? a. increased mechanization has reduced the need for labor.b. increased mechanization has increased the need for water, thereby increasing the need for labor.increased mechanization has increased the use of land, thereby increasing the need for labor.d. increased mechanization has increased food production, thereby increasing the need for labor. select the best answer from the choices provided.

All of the following occurred due to the invention of the railroad except