How many earthquakes of magnitude 4.0 does it take to release the same amount of energy released by one earthquake of magnitude 8.0? (Show your work)

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.

The dashed segment of the plotted experiment in the graph in the lesson is called an

Weathering is an example of an external force of change. question 2 options: true false