AHH HELP OMG :') Which of the following sets of features are adaptations to overcome the buoyancy aspect of the aquatic problem? Pick the best possible answer.
Tapetum lucidum, echolocation, electroreception
Caudal fluke, enlarged flippers, flattened tail
Insulation, repellant oil, altered metabolism
O Pachyostosis, osteosclerosis, gastroliths