Polar bears and brown bears are related. over time, polar bears and brown bears have developed different appearances. which of these most likely caused the difference in fur color between the two species? (s7l5a)
a. polar bears ate less and lost fur color. b. brown bears ate food that caused their fur to be brown. c. brown bears benefited by growing thicker fur to keep them warm. d. polar bears benefited from lighter colored fur and passed it on to their offspring