Identifying the Function of Nitrogen Fixation Paragraph

In the early 20th century, scientists discovered that the earth’s atmosphere contains a significant amount of nitrogen. Although nitrogen is a key element for life, it is not easily accessible for most living organisms. To make it available, certain bacteria in the soil convert nitrogen from the air into ammonia, which can then be utilized by plants.

This process, known as nitrogen fixation, plays a crucial role in the nutrient cycle, providing essential nutrients for plant growth. This biological process is largely mediated by a specific group of bacteria, which thrive in root nodules of leguminous plants. By facilitating this conversion, these bacteria ensure that nitrogen remains a vital part of the ecosystem.