Which one of the following best sums up the overall history of transformation of male northern elephant seal calls?
Started 9 months ago by Shashank in
Explanatory Answer
The last few lines of the passage have the answer: “Modern males exhibit more individual diversity, and their calls are more complex. While 50 years ago the drumming pattern was quite simple and the dialects denoted just a change in tempo, Casey explained, the calls recorded today have more complex structures”.
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