During their first few weeks of life, polar bear cubs nurse most of the time and stay close to their mother to keep warm.
(polar bear cubs; nurse; most of the time; T:During their first few weeks of life) (polar bear cubs; stay; close to their mother; to keep warm; T:During their first few weeks of life)
polar bear cubs polar bear cubs
nurse stay
most of the time T:During their first few weeks of life
close to their mother to keep warm T:During their first few weeks of life