Which of the following were changes in the means of producing art during the Renaissance? [Choose all that apply.] 1. oil paint
2. frescoes
3. printing press
4. double wall

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.