Assertion: zinc | /r/AtLocation | the soil
Facets:
value: through the weathering of rocks
type: MANNER
Source sentences:
text: Zinc is added to the soil primarily through the weathering of rocks, but humans have added zinc through fossil fuel combustion, mine waste, phosphate fertilizers, pesticide (zinc phosphide), limestone, manure, sewage sludge, and particles from galvanized surfaces.