The tapeats sandstone is an example of a shoreline sedimentary facies (beach, shore deposit). in the mojave desert, california, similar sandstones to the tapeats are 530 ma. in the grand canyon, arizona, the tapeats is about 505 ma. and in montana, similar sandstones are 498 ma. this lithostratigraphic unit is spans different geologic times and is called

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.