What are the scientific names for a polar bear and a grizzly bear?
The scientific name for a polar bear is Ursus maritimus, and the scientific name for a grizzly bear is Ursus arctos horribilis.
Complete the following task based on the instruction and optional input provided.### Instruction:
What are the scientific names for a polar bear and a grizzly bear?

### Output:
The scientific name for a polar bear is Ursus maritimus, and the scientific name for a grizzly bear is Ursus arctos horribilis.