Question

what is crop rotation and 2 advantages of it

Answer 1

=> as the soil can regain its fertility
=>they can get the good yeild

Answer 2

Each crop uses more of some nutrients and less of others. Farmers therefore change thier crop in each season so that the soil is not depleted of any particular nutrient. This is called crop rotation.

Advantages are:
1) Farmers have different products to sell in the market in every season.
2) Crop rotation gives various nutrients to the soil.