18. As the U. S. economy has developed, what trend is apparent in modern times?
O People have a greater dependence on renewable resources.
O Fewer people live in urban areas than in the 1800s.
O Fewer people live in rural areas than in the 1800s.
O People have a greater dependence on steam power.
Please hel

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 is the amount of organic matter in all living organisms in a habitat called?

What factors contribute to american farming success?