Assertion: smog's number | /r/CapableOf | exceed natural sources
Facets:
value: far
type: DEGREE
Source sentences:
text: But "in a large city, you can ignore natural aerosol products for the most part" because the number of aerosols produced by human activity far exceeds natural sources, says Sergey Nizkorodov, a chemist at the University of California, Irvine.