Although the atmosphere contains about 78% nitrogen gas, only a few types of organisms are able to convert it into a form usable by plants and other...

Although the atmosphere contains about 78% nitrogen gas, only a few types of organisms are able to convert it into a form usable by plants and other producers. What organisms can combine nitrogen in the atmosphere with hydrogen atoms to form ammonia?

denitrifying bacteria

earthworms

consumers

producers

nitrogen-fixing bacteria