16. Emperor penguins are found on the continent of Antarctica. Most of their time on
land is spent on their feet touching the cold ice instead of lying down. When taking care
of offspring, the male penguins balance their young on the top of their feet. During the
winter months, penguins remain huddled together in tight packs and rotate from the
outside to the inside of these huddles. Suggest an explanation for how each of these
behaviors arose and how they are beneficial. (SEC1.d)
