Shark is eurythermal while polar bear is stenothermal. What advantage

1.	Shark is eurythermal while polar bear is stenothermal. What advantage does the former have and what is the constraint the later has ?
Answer» Shark: tolerates wide range of temperature so wide spread / survives in all waters. Polar bear : restricted occurrence in narrow range of temperature so constraint to live in very cold icy environment.

Shark is eurythermal while polar bear is stenothermal. What advantage does the former have and what is the constraint the later has ?

Answer»

Shark: tolerates wide range of temperature so wide spread / survives in all waters.

Polar bear : restricted occurrence in narrow range of temperature so constraint to live in very cold icy environment.