Biology

The practice that will not contribute to sustainability in agriculture is: C.Annual addition of pesticides.

Here's why:

A.Growing cover crops and multipurpose trees: Growing cover crops and planting multipurpose trees are sustainable practices. Cover crops improve soil health, prevent erosion, and help with nutrient cycling, while multipurpose trees provide environmental benefits such as enhancing biodiversity, improving water retention, and offering additional resources (e.g., timber, fruits, or fuelwood).

B.Integrated pest management (IPM): IPM is a sustainable approach to pest control that combines biological, cultural, mechanical, and chemical methods in a way that minimizes harm to the environment, non-target organisms, and human health. It reduces reliance on chemical pesticides and focuses on long-term pest prevention.