Assertion: nitrogen's form | /r/HasProperty | organic
Facets:
Source sentences:
text: Atmospheric nitrogen occurs primarily in an inert form (N2) that few organisms can use; therefore it must be converted to an organic – or fixed – form in a process called nitrogen fixation.
text: Nitrogen is an incredibly versatile element, existing in both inorganic and organic forms as well as many different oxidation states.
text: When a plant dies, an animal dies, or an animal expels waste, the initial form of nitrogen is organic.