The Nitrogen Cycle

The video explains the nitrogen cycle, highlighting its importance for life on Earth. Nitrogen, essential for living organisms, is abundant in the air but unusable in its gaseous form. The cycle begins with nitrogen-fixing bacteria converting nitrogen gas into nitrates, which plants absorb to make proteins. These proteins travel up the food chain, providing animals with necessary nitrogen. Decomposition returns nitrogen to the soil, where bacteria convert it into ammonium and then back into nitrates. Finally, denitrifying bacteria release nitrogen gas back into the atmosphere, completing the cycle. This process is crucial for recycling nitrogen into compounds vital for life.

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