Question

Animals of colder regions have thick layer of subcutaneous fat

Answer 1

beacause animals living in colder region go in hibernation,in this period they sleep for months and the layer of subcutaneous fat digest and give them energy durring the period of hibernation

Answer 2

Animals in colder regions and fish of cold water have thick subcutaneous fat layer because fat acts as a good insulator and trap the body heat under the skin. This helps them survive in colder temperatures.

Habitat in cold region has lack of nutrition, so the fat layer also store nutrients that help the animal when required.