Question

What benefits do nitrogen-fixing organisms provide in an ecosystem?

A. they release nitrogen compounds into the air
B. they convert nitrate into gaseous nitrogen
C. they turn atmospheric nitrogen into organic nitrogen compounds.
D. they eat organisms that contain large amounts of nitrogen compunds

Answer 1

Nitrogen fixation is a process by which nitrogen in the Earth's atmosphere is converted into ammonia (NH3) or other molecules available to living organisms. The answer would be C.