Nitrogen fixing bacteria is a type of beneficial bacteria (Cyanobacteria) which has the ability to fix the atmospheric nitrogen into ammonium and nitrates form. This atmospheric nitrogen cannot used by the plants so these bacteria fixes it. This is a symbiotic association between plants and bacteria in which both gets benefit. This nitrogen used by the plants and produces more vegetation cover which is a food source of herbivores such as rabbit.
Hi :D Neutrons are neutral so they have no charge. Electrons have a negative charge and protons have a positive charge. For an atom's charge to be neutral there has to be an even amount of protons and electrons in the atom.
