How has the use of coal affected coal?

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.

Which of the following east asian contries are a peninsula? a. china b. taiwan c. south korea d. mongolia

The blue segment below is a diameter of oo. what is the length of the radius of the circle?