OldLady
Diamond Member
- Nov 16, 2015
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Are you completely ignoring my posts and asking questions anyway? C'mon jc. At least read the post first. I'm not insisting on the link.how is it polar bears can survive in San Diego and Chicago?I guess for once, I got it right to begin with. Please TRY to learn something.
How does climate change affect polar bears?
Threats to Polar Bears
- Fewer opportunities to feed
Polar bears rely on sea ice to hunt and store energy for the summer and autumn, when food can be scarce. Sea ice now melts earlier in the spring and forms later in the autumn in the bears’ southern range, like Hudson Bay and James Bay in Canada. As the bears spend longer periods without food, their health declines. For every week earlier the ice breaks up in Hudson Bay, bears come ashore roughly 10 kg (22 lbs) lighter and in poorer condition.- Fewer cubs
Unhealthy bears can lead to lower reproduction rates – and local extinction. Scientists have found the main cause of death for cubs to be either lack of food or lack of fat on nursing mothers.