The soil nutrients are depleted. The soil fertility increases. The soil becomes more porous. The soil erodes less rapidly.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What most likely happens to soil when crops are not rotated from year to year?
Possibilities:
- The soil nutrients are depleted.
- The soil fertility increases.
- The soil becomes more porous.
- The soil erodes less rapidly.

The soil nutrients are depleted.