Assertion: blue whale's vocalization | /r/CreatedBy | whale
Facets:
Source sentences:
text: The ever-increasing amount of ocean noise, including sonar, drowns out the vocalizations produced by whales, which may make it harder for them to communicate.
text: The ever-increasing amount of ocean noise, including sonar, drowns out the vocalizations produced by whales, which makes it harder for them to communicate.