Assertion: acid rain's acid | /r/CapableOf | leach calcium
Facets:
value: in their needles
type: LOCATION
value: from the cell membranes
type: TRANSITIVE-OBJECT
Source sentences:
text: Red spruce (Picea rubens) trees found at higher elevations in the eastern United States are harmed by acids leaching calcium from the cell membranes in their needles, making the needles more susceptible to damage from freezing during winter.