is bacteria. Bacteria play a crucial role in the nitrogen cycle by converting nitrogen gas into forms that plants can use, such as ammonium and nitrate. This process, known as nitrogen fixation, is essential for the growth of plants and other organisms in the ecosystem. Additionally, other types of bacteria help to recycle nitrogen-containing compounds through processes like nitrification, denitrification, and ammonification. These processes help to maintain a balance of nitrogen in the environment, ensuring that all living organisms have access to this essential nutrient.
