Which of the following practices would NOT be considered sustainable?

Dependence on synthetic herbicides is not considered a sustainable practice because it can lead to a range of environmental issues. The use of synthetic chemicals often contributes to soil degradation, water contamination, and the development of herbicide-resistant weed populations. Sustainable agriculture emphasizes the importance of maintaining ecological balance, enhancing soil health, and protecting natural resources. Practices such as crop rotation, using cover crops, and implementing conservation tillage support these goals by improving soil structure, reducing erosion, and promoting biodiversity, making them key components of sustainable farming systems. In contrast, relying heavily on synthetic inputs undermines these objectives and can create long-term negative impacts on the environment and ecosystem health.