Assertion: fertilizer's phosphorus | /r/HasProperty | exposed to air
Facets:
Source sentences:
text: stands for phosphorus, which is a chemical element that catches fire when exposed to air; so plants cannot take it up in this form.
text: Plants do not absorb their plant foods in these forms, since nitrogen is an inert gas, pure phosphorus and potassium are very active chemically and burn if exposed to the air or water.