Why co2 gas collected over erect gass jar

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.

Using examples from various part of the world. examine the assertion that mere presence of abundant natural resources in a country does not guarantee rapid socio economic development

Atopography map is used to study changes in vegetation associated with different elevations. which individual most likely used them for this purpose?