Subject	invasive species
Predicate	disrupt
Object	ecosystem
Modality	Modality Occurrences some[subj/introduced] 1 often 1 TBC[natural ecosystems] 1
Polarity	POSITIVE
Plausibility	0.9407
Neighborhood Sigma	0.9942
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source invasive species disrupt ecosystems 14 Google Autocomplete, Answers.com Questions introduced invasive species often disrupt an ecosystem 1 Google Autocomplete invasive species disrupt natural ecosystems 1 Google Autocomplete