Question

plant growth is limited by available nitrogen. why is nitrogen fixation a limiting factor? the stability of nitrogen gas makes it difficult to turn into nitrogen for living things. there is no nitrogen in the atmosphere; it is only found in aquatic biomes. nitrogen must be produced by bacteria due to the inability of recycling by decomposers. there is very little nitrogen available after fossil fuel combustion utilizes the available nitrogen.

Explanation:

Nitrogen gas in the atmosphere is very stable due to the triple - bond between nitrogen atoms. This stability makes it difficult for plants and other organisms to directly use atmospheric nitrogen. Nitrogen fixation is the process of converting atmospheric nitrogen into a form that can be used by living things. Since it's hard to convert stable nitrogen gas, nitrogen fixation becomes a limiting factor for plant growth and for the availability of nitrogen for living organisms.

Answer:

The stability of nitrogen gas makes it difficult to turn into nitrogen for living things.