Question

Nitrogen fixation be done by

Answer 1

Answer:

Explanation:

They contain symbiotic bacteria called rhizobia within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other plants. When the plant dies, the fixed nitrogen is released, making it available to other plants; this helps to fertilize the soil.

Answer 2

Answer:

rhizobium bacteria in the roots of leguminous plants