1. The global nitrogen cycle in the twenty-first century
2. 26. United Nations General Assembly, United Nations Strategic Plan for Forests 2017–2030. A/RES/71/285. https://undocs.org/pdf?symbol=E/RES/2017/4.
3. 3. National Geographic (2022). The Development of Agriculture. https://education.nationalgeographic.org/resource/development-agriculture.
4. 52. Sustainable Agriculture Research and Education (2015). Cover Crops and Carbon Sequestration. www.sare.org/publications/cover-crops/ecosystem-services/cover-crops-and-carbon-sequestration.
5. Agricultural non-CO2 emission reduction potential in the context of the 1.5 °C target