The animals of cold countries have relatively shorter and poorly developed ears,eyes,hairs and other phenotypic characters. This is known by which law?

1. cope’s law
2. dollo’s law
3. allen’s law
4. bergamman’s law

This question is from Ecology unit of class 12. This is Allen’s law.Because animals living in cold climates need to conserve heat. Allen's rule predicts that the animals living in colder region should have evolved comparatively lowsurface area-to-volume ratiosto minimize the surface area by which they dissipate heat, allowing them to retain more heat