What is Federalism and how has it changed over the course of American History? What role does the Supremacy Clause play in the Federal system created in the Constitution?

crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.

answer; i believe the best answer is (straight ticket); good luck

c) troops march forward in close formation against newer, more accurate weapons