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The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called

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.

What distinguishes monsoon asia from the remainder of asia? what are the consequent differences between the two?