According to the article, an endangered species is one that is

Which poses the greatest threat to polar bears today?

What major change has occurred in the polar bear's natural habitat?

Which type of energy contributes to global warming?

Certain companies use money and political influence to attack climate science and renewables in order to protect

The World Wildlife Fund estimates that _______ of Arctic sea ice has disappeared in the past 30 years.

What type of conservation efforts are people generally interested in?

Many threatened or endangered species can be saved by a large

Thanks to laws that protect them, species that make it onto the endangered species list _______ become extinct.