Which of the following is an impact of intensive farming practices?

Intensive farming practices often focus on maximizing agricultural output, which can lead to several significant impacts on the environment. One of the major consequences is increased soil erosion. This occurs because intensive farming typically involves the use of heavy machinery, continuous planting, and limited crop rotation. These practices can strip the soil of its natural vegetation and cover, which are essential for holding the soil in place. Without sufficient plant roots to anchor the soil and provide structure, rain and wind can easily wash or blow away the topsoil, leading to erosion.

In contrast, options that suggest improved crop diversity, lower greenhouse gas emissions, or enhanced animal welfare are less commonly associated with intensive farming. Such farming methods are more likely to reduce diversity due to monocropping, potentially increase greenhouse gas emissions through higher fertilizer and pesticide use, and often lead to poorer conditions for animals due to confinement and stress. Thus, increased soil erosion stands as a clear and recognized impact of intensive farming practices.