Which one of the following best sums up the overall history of transformation of male northern elephant seal calls?
Started 10 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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