In the above reading, it talks about one population wandering away from the other in search of food as the beginning of the polar bear sub-species. Which of the following best describes what occurred to cause this split of the bear population? A. The brown bears were killed by disease 125,000 years ago leaving only a population of polar bears.

B. The massive glaciers isolated the populations causing geographic isolation

C. They had a variety of fur color alleles, so all the white furred bears moved north

D. All of the Above

Question 2.
Which of the following is an adaptation that allows a polar bear to survive in this biome?

A. Thick fur to help them stay warm

B. They began hunting seal carcasses and then live seals at the waters edge to gain nutrients to survive

C. Their molar shape changed to adapt to eating seals instead of berries.

D. All of the above