Submitted by admin on Sun, 05/18/2014 - 12:31
definition:
The evolutionary process by which an action or behaviour pattern in an animal loses its original function but is retained for its role in display or other social interaction.
sentence:
Footdrumming, as with other signals, probably originated by ritualization of older forms of behavior not associated with communication such as running and digging.
difficulty:
medium
toefl frequency:
2
toefl classification: