What does sand and gravel do to the soil explain

Eastern europe’s population growth can be attributed to these factors. select all that apply migration

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.

How did geographic isolation affect the islands in the australasia ecozobne?