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Well, answering your questions, Agroecology is a relatively new scientific discipline, which, compared to conventional agronomy, is based on the application of the concepts and principles of ecology to the design, development and management of sustainable agricultural systems. And I'm studying English in the US

Sustainability is very important. We definitely need to work better to make agricultural systems that do not harm the environment and also still produce the amount of food required. Chemicals like Round Up should not be used either. Thanks for the reply and added information!