Question

which plant fixes nitrogen ? How these plants do fixes nitrogen ?​

Answer 1

Answer:

Nitrogen fixing plants don't pullnitrogen from theair on their own.They actually need help from a common bacteria called Rhizobium. 

Answer 2

Answer:

Plants that contribute to nitrogen fixation include the legume family – Fabaceae – with taxa such as clover, soybeans, alfalfa, lupins, peanuts, and rooibos.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 and this helps to fertilize the soil.