What are the 7 levels of classification of a polar bear and why?

The seven levels of classification for a polar bear (Ursus maritimus) are:

1. Domain: Eukarya (organisms with complex cells)
2. Kingdom: Animalia (multicellular, eukaryotic organisms)
3. Phylum: Chordata (animals with a notochord)
4. Class: Mammalia (warm-blooded vertebrates with fur and mammary glands)
5. Order: Carnivora (meat-eating mammals)
6. Family: Ursidae (the bear family)
7. Genus and Species: Ursus maritimus (specific to polar bears)

This classification reflects the polar bear's evolutionary relationships, biological characteristics, and habitat, helping scientists study and understand its ecology and conservation needs.