What is the nitrogen cycle and why is it important to our livelihood? Learn how the nitrogen cycle affects the food we eat, how it turns into a greenhouse gas, why it is essential to farming, and how ARS researchers are helping to preserve it. Check out our other videos in this series: What is the Hydrologic (Water) Cycle? (https://youtu.be/aE7e3MpbXnU), What is Agroforestry?(https://youtu.be/804f4VTm32g) and What is Photosynthesis? (https://youtu.be/86YrnDfZHaI)
