English Language · Reading Comprehension
Based on studies of northern elephant seal dialects, it can be inferred that the call pulse rate of male northern elephant seals in the southern rookeries was faster because:
- 1the calls of male northern elephant seals in the southern rookeries have more sophisticated structures, containing doublets and triplets.
- 2the male northern elephant seals of Isla Guadalupe with faster call pulse rates might have been the original settlers of the southern rookeries.✓
- 3a large number of male northern elephant seals migrated from the southern rookeries to Año Nuevo Island in the early 1970s.
- 4a large number of male northern elephant seals from Año Nuevo Island migrated to the southern rookeries to recolonise them.
Correct answer
the male northern elephant seals of Isla Guadalupe with faster call pulse rates might have been the original settlers of the southern rookeries.
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