Organisms living in polar regions have to face the severe winter and show different types of adaptations.
(i) They have thick fur and more amount of fat for insulation from the cold.
(ii) During extreme winter they undergo hibernation during which their metabolic activities slow down and they sleep for a long period to avoid the harsh cold condition.
(iii) They have shorter ears and limbs to minimise heat loss.
What is altitude sickness and how does our body recover from this?