What are three ways our interpretations of the constitution change?

1) Proposal by convention of states, ratification by state conventions (never used)

2) Proposal by convention of states, ratification by state legislatures (never used)

3) Proposal by Congress, ratification by state conventions (used once)

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.