To find the polar bear population in 2007, you would need to consult resources like:
* Scientific publications: Search databases like Google Scholar or Web of Science for studies or reports on polar bear populations in that time period.
* Government websites: Websites for organizations like the U.S. Fish and Wildlife Service, Environment Canada, or the International Union for Conservation of Nature (IUCN) may have relevant data.
* Conservation organizations: Websites of organizations like Polar Bears International or World Wildlife Fund could also provide information.
Keep in mind that polar bear population estimates are complex and can vary depending on the study, methodology, and region.