Farming has been around for a very long time. It seems that people understand the ways in which to farm. You take some seeds and plant them. Then water them and wait until the seeds grow into plants.
During the harvest time, you pull the products off of the crops. However, farming is not that simple. Instead, there are actually different types of farming and different times that farming should be used. If the plowing soil is curved through curved bands in order for it to follow the shape of the land, this is done in order to prevent the soil from flowing directly down the slopes.
This is a better way of farming when the land is not level but slopes down in certain areas. This type of farming is called contour plowing.