The air is 80% Nitrogen, in what form do organisms use nitrogen?

Plants use Nitrogen from the soil

Explanation:

They use it for nutrients

Nitrogen in the air

Explanation:

The Earth's atmosphere contains almost 80 % nitrogen gas. It cannot be used in this form by most living organisms until it has been fixed, that is reduced (combined with hydrogen), to ammonia.

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.