What percentage of the solar energy that reaches the marsh is incorporated into gross primary what percentage of the solar energy that reaches the marsh is incorporated into gross primary production?

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.

Solve the equation.8 - 2x = -8х + 14

The process by which liquid water changes into water vapour is called what ?