Ano ang pagkakaiba ng wika at etnisidad bilang dalawang batayan by paghating etnolinggwistiko?

Need now! 45 points laboratory: weather map interpretation i need someone to answer the other two questions. i will give to the best answer!

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.

Based on current rates the earths human population is expected to grow how much by 2050