Ineed ! this will him me s much

1. 12

2. $12

3. 1.2

If you Google the problem the first link will have a step by step explanation

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.

d

explanation:

i think that this is the best answer, but im sorry if this is wrong