Polar bears give birth and hunt on sea ice. Animals from the Arctic need to have a frozen mass of ice so they can live and have a habitat. Which of the following would help polar bears stay on solid "ground/ice" during the summers, when Arctic ice is melting more?

Group of answer choices

Growing another layer of fur during summer

Migrate inland to search for different food sources

Sticking to the usual diet of seals

Staying put until the ice refreezes

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.