What environmental structure is essential for polar bears to hunt seals?
Sea ice
Seroprevalence measures the presence of these in blood.
antibodies
This study focused on polar bears from this region.
Western Hudson Bay
The arctic is warming fast than most other parts of the world. True or False?
true
In the Western Hudson Bay, polar bears move onto land during which season?
Summer
Antibodies show that an animal was exposed to a pathogen in the ___.
past
Over the 32-year period, pathogen exposure generally did this?
Increased
Longer ice-free seasons mean polar bears spend more time in this environment.
Land
In the spring, access to this prey is critical for cub survival and maternal recovery?
Seal pups
Spending more time on land may increase contact with new types of this.
Pathogens
The researchers tested polar bear samples for antibodies to this number of pathogens.
Changes in ice can affect polar bears' ability to hunt this main food source
Seals