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These male elephant seals compete for females by displaying ________ behavior.
- ________ may occur during an early stage of development called the critical period.
- High testosterone levels trigger singing in male western meadowlarks; this is an example of
- Chimpanzees exhibit which of the following?
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The red belly of male stickleback fish serves as a ________ stimulus for aggressive behavior.
- Animals in which the young require long weaning periods often exhibit
- Classical conditioning occurs when a ________ is associated with a ________.
- Highly decorated tail feathers of male peacocks are an example of
