Describe the main differences between conventional agriculture and agroecology in terms of environmental impacts.

• A. Conventional often relies on chemical inputs and monocultures; agroecology emphasizes biodiversity, local knowledge, reduced inputs.
• B. Agroecology emphasizes monocultures and high chemical inputs.
• C. Conventional agriculture improves biodiversity more than agroecology.
• D. Agroecology requires larger farms.

Answer: (A)

The main idea is how farming systems affect the environment. Conventional agriculture typically relies on chemical inputs and monocultures, which can drive soil degradation, nutrient runoff and water pollution, pesticide exposure for non-target organisms, higher greenhouse gas emissions from input production, and reduced biodiversity. Agroecology, on the other hand, focuses on biodiversity, local knowledge, and reducing external inputs through practices like diversified cropping, polycultures, agroforestry, and ecological pest management. These approaches tend to protect soil health, lower chemical use and pollution, support beneficial organisms, and increase ecological resilience.

So the difference in environmental impacts is that conventional methods often incur environmental costs through chemical dependence and habitat loss, while agroecology minimizes those costs by promoting diversity and more sustainable, low-input management. The other statements conflict with how agroecology actually works—monocultures and high chemical inputs are not characteristic of agroecology, conventional farming does not typically improve biodiversity more than agroecology, and agroecology is compatible with farms of various sizes, not restricted to larger operations.