Question: What is the main idea of the passage discussing the impact of climate change on polar bears?

Options:

1. Polar bears are adapting to climate change.
2. Climate change is leading to the extinction of polar bears.
3. Polar bears are thriving in warmer temperatures.
4. The diet of polar bears is changing due to climate change.

Correct Answer: Climate change is leading to the extinction of polar bears.

Solution:

The passage primarily highlights the threats posed by climate change to polar bear populations, emphasizing their risk of extinction.