Nitrogen Cycle Kahoot

The nitrogen cycle is the process through which nitrogen is converted between its various chemical forms, circulating through the atmosphere, soil, and living organisms.

Plants and animals cannot use nitrogen directly from the air because it exists as N2, which has a strong triple bond that they cannot break.

N2

Bacteria help in the process of nitrogen fixation, converting atmospheric nitrogen into forms that plants can absorb.

Decomposition returns nitrogen to the soil and atmosphere, allowing it to be reused in the nitrogen cycle.

Nitrogen fixation is the process of converting atmospheric nitrogen (N2) into ammonia (NH3) or related compounds, making it available for use by plants.

Approximately 78% of the atmosphere is nitrogen.

The triple bond in nitrogen gas makes it very stable and unreactive, preventing most organisms from using it directly.

Nitrification is the process by which ammonia is converted into nitrites (NO2-) and then into nitrates (NO3-), which plants can absorb.

Denitrification is the process by which nitrates are converted back into nitrogen gas (N2), returning it to the atmosphere.