Whales have what seem like remnants of a pelvis and femur, as shown here.

C

Choices:

transitional structures

analogous structures

vestigial structures

adapted structures

-efficient data acquisition

-medical data processing

-data analysis for research

-voice recognition systems

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.