Nitrogen-fixing bacteria can convert ammonia into nitrogen?

In biology, symbiotic nitrogen-fixing bacteria invade the root hairs of host plants where increment or multiply  and stimulate  formation of root nodules,  enlargements of plant cells and bacteria in intimate association.  The  bacteria   that change nitrogen gas from the atmosphere into solid nitrogen usable by plants are called nitrogen-fixing  bacteria. These bacteria are found both in the soil and in symbiotic relationship with plants.

Explanation:

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy