The National Research Council Committee on Twenty-First Century Systems Agriculture (2010) states:

Sustainability in agriculture is a complex and dynamic concept that includes a wide range of environmental, resource-based, economic, and social issues. The committees definition of sustainable farming does not accept a sharp dichotomy between unsustainable or sustainable farming systems because all types of farming can potentially contribute to achieving different sustainability goals and objectives.

What is an example of a farming practice for which the concept of sustainability appears relative or debatable? Solve