What threatens:?

Question

1) polar bears

2) spider monkeys

I know global warming for polar bears, but what would be the main cause of it that threatens polar bears? Also, I think deforestation is a threat to spider monkeys but it might be something else, not sure.

Answer 1

Spider monkeys may also have to face poachers.

Lack of fish and other creatures in the polar regions for the polar bears.

Why was this asked in the geology section?  You may get a more indepth answer in zoology or biology.