Terrestral animals are generally either ureotelic or uricotelic, not ammonotelic, why?

Which animal is not ammonotelic?

Small animals are rarely found in Polar regions .Why?

Ammonotelic animals are predominantly

An animal with same generic, specific and subspecific name is

Choose the animals which are not ureotelic ?

Statement-1 : Aquatic animals like whales and seals are said to be ureotelic animals. Statement-2 : It is because of the fact that their main nitrogenous waste product is urea.

Why mammals of colder climate generally have shorter ears and limbs?

Why mammals of colder elimate generally have shorter ears and limbs?